am c4e32005: am 17986e6b: am 8cd9e4f3: fix bug in applying patches

Merge commit 'c4e3200578ad670bee9f5a88e90e7a77089d5df7'

* commit 'c4e3200578ad670bee9f5a88e90e7a77089d5df7':
  fix bug in applying patches
diff --git a/applypatch/applypatch.c b/applypatch/applypatch.c
index 1d9ef6e..1ce7b5d 100644
--- a/applypatch/applypatch.c
+++ b/applypatch/applypatch.c
@@ -678,7 +678,7 @@
 
         int to_use = FindMatchingPatch(copy_file.sha1,
                                        patch_sha1_str, num_patches);
-        if (to_use > 0) {
+        if (to_use >= 0) {
             copy_patch_value = patch_data[to_use];
         }