Fix server error when no log file set

nyalldawson · nyalldawson · commit c8f7886cd5bb · 2016-09-27T09:27:54.000+10:00
(cherry-picked from f5ffbbf)
diff --git a/src/server/qgsserverlogger.cpp b/src/server/qgsserverlogger.cpp
@@ -38,6 +38,9 @@ QgsServerLogger::QgsServerLogger(): mLogFile( nullptr )
 {
   //logfile
   QString filePath = getenv( "QGIS_SERVER_LOG_FILE" );
+  if ( filePath.isEmpty() )
+    return;
+
   mLogFile.setFileName( filePath );
   if ( mLogFile.open( QIODevice::Append ) )
   {

Original file line number	Diff line number	Diff line change
`@@ -38,6 +38,9 @@ QgsServerLogger::QgsServerLogger(): mLogFile( nullptr )`
`38`	`38`	`{`
`39`	`39`	`//logfile`
`40`	`40`	`QString filePath = getenv( "QGIS_SERVER_LOG_FILE" );`
	`41`	`+ if ( filePath.isEmpty() )`
	`42`	`+ return;`
	`43`	`+`
`41`	`44`	`mLogFile.setFileName( filePath );`
`42`	`45`	`if ( mLogFile.open( QIODevice::Append ) )`
`43`	`46`	`{`