Update to avoid extra line in result file.

Signed-off-by: Paul Mani <paulmani88@yahoo.com>

Author: pmani84

demos/copilot/src/tests/wrap-qemu.py

@@ -60,7 +60,8 @@ def run_qemu_with_watch(str_to_exit_on, timeout, commands):
             if(resultStart):
                 if(outputFile is None):
                     outputFile = open("../../../test-results/test-results-system-cross.xml", "w")
-                outputFile.write(output)
+                if str_to_exit_on not in output:
+                    outputFile.write(output)
 
             if isWatchedStr("Test results directory not found. Writing results to console", output):
                 resultStart = True