Skipped tests shouldn't be failures [part 2]

Summary: Missed one file in the previous commit

Test Plan: compiles

Reviewers: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D47055

table/cuckoo_table_reader_test.cc

@@ -8,8 +8,8 @@
 #ifndef GFLAGS
 #include <cstdio>
 int main() {
-  fprintf(stderr, "Please install gflags to run this test\n");
-  return 1;
+  fprintf(stderr, "Please install gflags to run this test... Skipping...\n");
+  return 0;
 }
 #else