Fixed a crash in the plugin that occurs when the epsg code for a web section cannot be parsed

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@13263 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: timlinux

python/plugins/mapserver_export/ms_export.py

@@ -382,8 +382,11 @@ def writeWebSection(self):
     self.outFile.write("\n")
 
     destsrs = self.qgs.getElementsByTagName("destinationsrs")[0]
-    epsg = destsrs.getElementsByTagName("epsg")[0].childNodes[0].nodeValue.encode("utf-8")
-
+    try:
+      epsg = destsrs.getElementsByTagName("epsg")[0].childNodes[0].nodeValue.encode("utf-8")
+    except:
+      # default to epsg
+      epsg="4326"
     self.outFile.write("    # WMS server settings\n")
     self.outFile.write("    METADATA\n")
     self.outFile.write("      'ows_title'           '" + self.mapName + "'\n")