kernel32: Use strncmpiW instead of memicmpW for strings without embedded nulls.

dlls/kernel32/file.c

@@ -1521,7 +1521,7 @@ HANDLE WINAPI CreateFileW( LPCWSTR filename, DWORD access, DWORD sharing,
         static const WCHAR conW[] = {'C','O','N'};
 
         if (LOWORD(dosdev) == sizeof(conW) &&
-            !memicmpW( filename + HIWORD(dosdev)/sizeof(WCHAR), conW, ARRAY_SIZE( conW )))
+            !strncmpiW( filename + HIWORD(dosdev)/sizeof(WCHAR), conW, ARRAY_SIZE( conW )))
         {
             switch (access & (GENERIC_READ|GENERIC_WRITE))
             {

dlls/kernel32/process.c

@@ -550,7 +550,7 @@ static void set_registry_variables( HANDLE hkey, ULONG type )
         }
         /* PATH is magic */
         if (env_name.Length == sizeof(pathW) &&
-            !memicmpW( env_name.Buffer, pathW, ARRAY_SIZE( pathW )) &&
+            !strncmpiW( env_name.Buffer, pathW, ARRAY_SIZE( pathW )) &&
             !RtlQueryEnvironmentVariable_U( NULL, &env_name, &tmp ))
         {
             RtlAppendUnicodeToString( &tmp, sep );

dlls/kernel32/volume.c

@@ -1942,7 +1942,7 @@ BOOL WINAPI GetVolumePathNamesForVolumeNameW(LPCWSTR volumename, LPWSTR volumepa
             linkname = (const WCHAR *)((const char *)link + link->MountPoints[j].SymbolicLinkNameOffset);
 
             if (link->MountPoints[j].SymbolicLinkNameLength == sizeof(dosdevicesW) + 2 * sizeof(WCHAR) &&
-                !memicmpW( linkname, dosdevicesW, ARRAY_SIZE( dosdevicesW )))
+                !strncmpiW( linkname, dosdevicesW, ARRAY_SIZE( dosdevicesW )))
             {
                 len += 4;
                 if (volumepathname && len < buflen)