Fix length of pattern.

After skipping * with "token++", the length should decrease by 1 as
well.

Change-Id: I132eb7d12bb756f2f713c607e92741ca834aef81

tools/aapt/AaptAssets.cpp

@@ -122,6 +122,7 @@ static bool isHidden(const char *root, const char *path)
         if (token[0] == '*') {
             // Match *suffix
             token++;
+            n--;
             if (n <= plen) {
                 ignore = strncasecmp(token, path + plen - n, n) == 0;
             }