AutoTest: Fix test result output when debugging tests

When executing tests in debug mode the results are not displayed
as usual in the test result pane. In debug mode a newline character
is added to each line before passing it to the outputreader. The regular
expressions used in the GTest- and QtTestOutputReader do not match
because of the newline character.

Change-Id: Ia8051497097c950b5cf2d64cd4de0cb425802c50
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/autotest/testrunner.cpp

@@ -295,7 +295,7 @@ static void processOutput(TestOutputReader *outputreader, const QString &msg,
                 break;
         }
         for (const QString &line : msg.mid(start).split('\n'))
-            outputreader->processOutput(line.toUtf8() + '\n');
+            outputreader->processOutput(line.toUtf8());
         break;
     }
     case Utils::OutputFormat::StdErrFormatSameLine: