Add Missing invocations to VA_END() for VA_START().

Signed-off-by: rsun3
Reviewed-by: lgao4

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12979 6f19259b-4bc3-4df7-8a09-765794883524

MdeModulePkg/Universal/SetupBrowserDxe/Ui.c

@@ -852,8 +852,6 @@ CreateDialog (
   ASSERT (TempString);
   ASSERT (BufferedString);
 
-  VA_START (Marker, KeyValue);
-
   //
   // Zero the outgoing buffer
   //
@@ -875,6 +873,8 @@ CreateDialog (
 
   LargestString = 0;
 
+  VA_START (Marker, KeyValue);
+
   //
   // Determine the largest string in the dialog box
   // Notice we are starting with 1 since String is the first string