add test for inline comment without trailing newline

test.cpp

@@ -105,6 +105,16 @@ int main(int argc, char **argv) {
         printf("Result: %s\n", json_failing_comment.dump().c_str());
     }
 
+    failing_comment_test = R"({// bad comment })";
+
+    json_failing_comment = Json::parse(
+      failing_comment_test, err_failing_comment, /*detect_comments=*/ true);
+    if (!err_failing_comment.empty()) {
+        printf("Failed: %s\n", err_failing_comment.c_str());
+    } else {
+        printf("Result: %s\n", json_failing_comment.dump().c_str());
+    }
+
     failing_comment_test = R"({
           "a": 1
         }/)";