Add some missing return false lines to test_config.cc.

Change-Id: I9540c931b6cdd4d65fa9ebfc52e1770d2174abd2
Reviewed-on: https://boringssl-review.googlesource.com/7330
Reviewed-by: Steven Valdez <svaldez@google.com>
Reviewed-by: David Benjamin <davidben@google.com>

ssl/test/test_config.cc

@@ -178,12 +178,14 @@ bool ParseConfig(int argc, char **argv, TestConfig *out_config) {
       size_t len;
       if (!EVP_DecodedLength(&len, strlen(argv[i]))) {
         fprintf(stderr, "Invalid base64: %s\n", argv[i]);
+        return false;
       }
       std::unique_ptr<uint8_t[]> decoded(new uint8_t[len]);
       if (!EVP_DecodeBase64(decoded.get(), &len, len,
                             reinterpret_cast<const uint8_t *>(argv[i]),
                             strlen(argv[i]))) {
         fprintf(stderr, "Invalid base64: %s\n", argv[i]);
+        return false;
       }
       base64_field->assign(reinterpret_cast<const char *>(decoded.get()), len);
       continue;