Partially make EdkModulePkg pass intel IPF compiler with /W4 /WX switched on.

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2313 6f19259b-4bc3-4df7-8a09-765794883524

EdkModulePkg/Universal/Variable/Pei/Variable.c

@@ -68,6 +68,7 @@ Returns:
 
 }
 
+STATIC
 VARIABLE_HEADER *
 GetNextVariablePtr (
   IN VARIABLE_HEADER  *Variable
@@ -90,6 +91,7 @@ Returns:
   return (VARIABLE_HEADER *) ((UINTN) GET_VARIABLE_DATA_PTR (Variable) + Variable->DataSize + GET_PAD_SIZE (Variable->DataSize));
 }
 
+STATIC
 BOOLEAN
 EFIAPI
 IsValidVariableHeader (
@@ -120,6 +122,7 @@ Returns:
   return TRUE;
 }
 
+STATIC
 VARIABLE_STORE_STATUS
 EFIAPI
 GetVariableStoreStatus (
@@ -163,6 +166,7 @@ Returns:
   }
 }
 
+STATIC
 EFI_STATUS
 CompareWithValidVariable (
   IN  VARIABLE_HEADER         *Variable,
@@ -215,6 +219,7 @@ Returns:
   return EFI_NOT_FOUND;
 }
 
+STATIC
 EFI_STATUS
 EFIAPI
 FindVariable (