Fix check_perfmon to support non-localized names

This fixes check_perfmon to support non-localized names on localized
Windows machines. The fix handles the given performance counter by
default as non-localized name, if none is found it falls back to the
localized name.

refs #5546

(cherry picked from commit 5da4fbd)

plugins/check_perfmon.cpp

@@ -297,7 +297,11 @@ bool QueryPerfData(printInfoStruct& pI)
 	if (FAILED(status))
 		goto die;
 
-	status = PdhAddCounter(hQuery, pI.wsFullPath.c_str(), NULL, &hCounter);
+	status = PdhAddEnglishCounter(hQuery, pI.wsFullPath.c_str(), NULL, &hCounter);
+
+	if (FAILED(status))
+		status = PdhAddCounter(hQuery, pI.wsFullPath.c_str(), NULL, &hCounter);
+
 	if (FAILED(status))
 		goto die;