vbit-tester: In test_ternary_op return number of tests executed.

I don't recall gcc complaining about this. But clang did.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13205

memcheck/tests/vbit-test/ternary.c

@@ -62,4 +62,5 @@ test_ternary_op(const irop_t *op, test_data_t *data)
 	 tests_done++;
       }
    }
+   return tests_done;
 }