CFE_Integration::integrate_onZeroLs multiple executions now possible

AMDiS/src/compositeFEM/CFE_Integration.cc

@@ -277,7 +277,7 @@ namespace AMDiS {
 
     }  // end of: mesh traverse
 
-    delete surfQuad;
+   /// delete surfQuad;  // deleting surfQuad prevents multiple executions of integrate_onZeroLs, so better don't delete it here
 
     return int_val;
   }