Dont write FILTER keyword if the SQL filter doesn't exists

git-svn-id: http://svn.osgeo.org/qgis/trunk@8302 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: gsherman

python/plugins/mapserver_export/ms_export.py

@@ -308,7 +308,8 @@ def writeMapLayers(self):
         self.outFile.write("    CONNECTIONTYPE postgis\n")
         self.outFile.write("    CONNECTION '" + pgConnString + "'\n")
         self.outFile.write("    DATA '" + sqlData + "'\n")
-        self.outFile.write("    FILTER '" + sqlFilter + "'\n")
+        if sqlFilter:
+          self.outFile.write("    FILTER '" + sqlFilter + "'\n")
 
       elif providerString == 'wms' and lyr.getAttribute("type").encode('utf-8').upper() == 'RASTER':
         # it's a WMS layer