Fix length of pattern.

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

Change-Id: I132eb7d12bb756f2f713c607e92741ca834aef81
diff --git a/tools/aapt/AaptAssets.cpp b/tools/aapt/AaptAssets.cpp
index 73705ae..f2fa3f5 100644
--- a/tools/aapt/AaptAssets.cpp
+++ b/tools/aapt/AaptAssets.cpp
@@ -122,6 +122,7 @@
         if (token[0] == '*') {
             // Match *suffix
             token++;
+            n--;
             if (n <= plen) {
                 ignore = strncasecmp(token, path + plen - n, n) == 0;
             }