oeqa/utils/commands: Avoid log message duplication

Each time a runqemu() fails, the log handler would be left behind meaning
messages from any subsequent run would be duplicated (or worse/more).

This ensures we remove the handler regardless and means we no longer
have the duplication.

(From OE-Core rev: 532984708436bdfa3a8cac2c684a425eb249bad0)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/lib/oeqa/utils/commands.py

@@ -345,11 +345,11 @@ def runqemu(pn, ssh=True, runqemuparams='', image_fstype=None, launch_cmd=None,
         yield qemu
 
     finally:
+        targetlogger.removeHandler(handler)
         try:
             qemu.stop()
         except:
             pass
-    targetlogger.removeHandler(handler)
 
 def updateEnv(env_file):
     """