checksrc.whitelist: "missing space after close paren"

... when it was within a string!

lib/checksrc.whitelist

@@ -9,3 +9,4 @@
     return fopen(file, "r", "rfm=stmlf", "ctx=stm");
     curl_memlog("FILE %s:%d fopen(\"%s\",\"%s\") = %p\n",
            a URL as file://localhost//foo must be valid as well, to refer to
+  const char atom_specials[] = "(){ %*]";