Update the code to following EDK coding style document.

1) Pointer value should compare with NULL.
2) Integer should compare with 0.
3) BOOLEAN should not compare with TRUE or FALSE.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5413 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/BdsDxe/BootMaint/BootOption.c

@@ -20,7 +20,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
 #include "BBSsupport.h"
 
 /**
-  EDES_TODO: Add function description
+  EDES_TODO: Add function description.
 
   @param MenuType        Use this parameter to identify current
                          Menu type
@@ -92,7 +92,7 @@ BOpt_CreateMenuEntry (
 }
 
 /**
-  EDES_TODO: Add function description
+  EDES_TODO: Add function description.
 
   @param MenuEntry       EDES_TODO: Add parameter description
 
@@ -173,7 +173,7 @@ BOpt_DestroyMenuEntry (
 }
 
 /**
-  EDES_TODO: Add function description
+  EDES_TODO: Add function description.
 
   @param MenuOption      EDES_TODO: Add parameter description
   @param MenuNumber      EDES_TODO: Add parameter description
@@ -206,7 +206,7 @@ BOpt_GetMenuEntry (
 }
 
 /**
-  EDES_TODO: Add function description
+  EDES_TODO: Add function description.
 
   @param CallbackData    BMM context data
 
@@ -338,7 +338,7 @@ BOpt_FindFileSystem (
       FileContext->Handle     = SimpleFsHandle[Index];
       MenuEntry->OptionNumber = Index;
       FileContext->FHandle    = EfiLibOpenRoot (FileContext->Handle);
-      if (!FileContext->FHandle) {
+      if (FileContext->FHandle == NULL) {
         BOpt_DestroyMenuEntry (MenuEntry);
         continue;
       }
@@ -583,7 +583,7 @@ Returns:
   }
 
   DirInfo = EfiLibFileInfo (NewDir);
-  if (!DirInfo) {
+  if (DirInfo == NULL) {
     return EFI_NOT_FOUND;
   }
 
@@ -598,7 +598,7 @@ Returns:
 
   DirBufferSize = sizeof (EFI_FILE_INFO) + 1024;
   DirInfo       = EfiAllocateZeroPool (DirBufferSize);
-  if (!DirInfo) {
+  if (DirInfo == NULL) {
     return EFI_OUT_OF_RESOURCES;
   }
   //
@@ -908,7 +908,7 @@ Returns:
               &BootNextSize
               );
 
-  if (BootNext) {
+  if (BootNext != NULL) {
     if (BootNextSize != sizeof (UINT16)) {
       SafeFreePool (BootNext);
       BootNext = NULL;
@@ -925,19 +925,19 @@ Returns:
                           &gEfiGlobalVariableGuid,
                           &BootOptionSize
                           );
-    if (!LoadOptionFromVar) {
+    if (LoadOptionFromVar == NULL) {
       continue;
     }
 
     LoadOption = EfiAllocateZeroPool (BootOptionSize);
-    if (!LoadOption) {
+    if (LoadOption == NULL) {
       continue;
     }
 
     CopyMem (LoadOption, LoadOptionFromVar, BootOptionSize);
     SafeFreePool (LoadOptionFromVar);
 
-    if (BootNext) {
+    if (BootNext != NULL) {
       BootNextFlag = (BOOLEAN) (*BootNext == BootOrderList[Index]);
     } else {
       BootNextFlag = FALSE;
@@ -1086,7 +1086,7 @@ BdsStrCpy (
   ASSERT (Destination != NULL);
 
   ReturnValue = Destination;
-  while (*Source) {
+  while (*Source != L'\0') {
     *(Destination++) = *(Source++);
   }
   *Destination = 0;
@@ -1180,7 +1180,7 @@ Returns:
   //
   // Search for ".efi" extension
   //
-  while (*FileName) {
+  while (*FileName != L'\0') {
     if (FileName[0] == '.') {
       if (FileName[1] == 'e' || FileName[1] == 'E') {
         if (FileName[2] == 'f' || FileName[2] == 'F') {
@@ -1406,7 +1406,7 @@ Returns:
                     &gEfiGlobalVariableGuid,
                     &BootOrderListSize
                     );
-  if (BootOrderList) {
+  if (BootOrderList != NULL) {
     //
     // already have Boot####
     //
@@ -1480,7 +1480,7 @@ Returns:
                       &gEfiGlobalVariableGuid,
                       &DriverOrderListSize
                       );
-  if (DriverOrderList) {
+  if (DriverOrderList != NULL) {
     //
     // already have Driver####
     //
@@ -1575,12 +1575,12 @@ Returns:
                           &gEfiGlobalVariableGuid,
                           &DriverOptionSize
                           );
-    if (!LoadOptionFromVar) {
+    if (LoadOptionFromVar == NULL) {
       continue;
     }
 
     LoadOption = EfiAllocateZeroPool (DriverOptionSize);
-    if (!LoadOption) {
+    if (LoadOption == NULL) {
       continue;
     }