cmd: Fix loop termination check in WCMD_batch.

programs/cmd/batch.c

@@ -58,7 +58,7 @@ void WCMD_batch (WCHAR *file, WCHAR *command, int called, WCHAR *startLabel, HAN
   BATCH_CONTEXT *prev_context;
 
   if (startLabel == NULL) {
-    for(i=0; (i<((sizeof(extension_batch) * sizeof(WCHAR))/WCMD_BATCH_EXT_SIZE)) &&
+    for(i=0; (i<sizeof(extension_batch)/(WCMD_BATCH_EXT_SIZE * sizeof(WCHAR))) &&
              (h == INVALID_HANDLE_VALUE); i++) {
       strcpyW (string, file);
       CharLower (string);