Merge pull request #4036 from zloylos:fix-output-json-3884

PiperOrigin-RevId: 482287697
Change-Id: I1179a1570cd64fcb156bda26e5c779b876c51742

googletest/src/gtest.cc

@@ -4829,6 +4829,9 @@ void JsonUnitTestResultPrinter::PrintJsonUnitTest(std::ostream* stream,
   // If there was a test failure outside of one of the test suites (like in a
   // test environment) include that in the output.
   if (unit_test.ad_hoc_test_result().Failed()) {
+    if (comma) {
+      *stream << ",\n";
+    }
     OutputJsonTestSuiteForTestResult(stream, unit_test.ad_hoc_test_result());
   }