ShellPkg: Fix several GCC compiler warnings

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10890 6f19259b-4bc3-4df7-8a09-765794883524

ShellPkg/Application/Shell/ShellProtocol.c

@@ -488,7 +488,9 @@ EfiShellGetDevicePathFromFilePath(
     NewPath = AllocateZeroPool(Size);
     ASSERT(NewPath != NULL);
     StrCpy(NewPath, Cwd);
-    if (NewPath[StrLen(NewPath)-1] == Path[0] == (CHAR16)L'\\') {
+    if ((NewPath[0] == (CHAR16)L'\\') &&
+        (NewPath[StrLen(NewPath)-1] == (CHAR16)L'\\')
+       ) {
       ((CHAR16*)NewPath)[StrLen(NewPath)-1] = CHAR_NULL;
     }
     StrCat(NewPath, Path);
@@ -2958,7 +2960,7 @@ EFI_SHELL_PROTOCOL         mShellProtocol = {
 
   This must be removed via calling CleanUpShellProtocol().
 
-  @param[in,out] NewShell   The pointer to the pointer to the structure 
+  @param[in,out] NewShell   The pointer to the pointer to the structure
   to install.
 
   @retval EFI_SUCCESS     The operation was successful.
@@ -3071,7 +3073,7 @@ CreatePopulateInstallShellProtocol (
 }
 
 /**
-  Opposite of CreatePopulateInstallShellProtocol.  
+  Opposite of CreatePopulateInstallShellProtocol.
 
   Free all memory and restore the system to the state it was in before calling
   CreatePopulateInstallShellProtocol.

ShellPkg/Library/UefiShellLevel1CommandsLib/If.c

@@ -62,7 +62,7 @@ IsNextFragment (
     //
     *Statement+=StrLen(Fragment);
     while (*Statement[0] == L' ') {
-      *Statement++;
+      Statement++;
     }
     FreePool(Tester);
     return (TRUE);
@@ -302,6 +302,9 @@ TestOperation (
     }
     return (FALSE);
     break;
+  default:
+    ASSERT(FALSE);
+    return (FALSE);
   }
   ASSERT(FALSE);
   return (FALSE);

ShellPkg/Library/UefiShellLevel2CommandsLib/Cp.c

@@ -111,6 +111,8 @@ CopySingleFile(
           *Resp = Response;
         case ShellPromptResponseYes:
           break;
+        default:
+          return SHELL_ABORTED;
       }
     }
   }

ShellPkg/Library/UefiShellLevel2CommandsLib/Map.c

@@ -790,9 +790,9 @@ IsNumberLetterOnly(
   )
 {
   while(String != NULL && *String != CHAR_NULL) {
-    if (! ( *String >= L'a' && *String <= L'z'
-         || *String >= L'A' && *String <= L'Z'
-         || *String >= L'0' && *String <= L'9')
+    if (! ((*String >= L'a' && *String <= L'z') ||
+           (*String >= L'A' && *String <= L'Z') ||
+           (*String >= L'0' && *String <= L'9'))
         ){
       return (FALSE);
     }