MgPropertyCollection:: Remove() returns true when trying to remove a non-existing element

[jiab]

Step to recur:

1. Construct a MgPropertyCollection object, and a MgBooleanProperty object.
   

2. Call Remove() using the MgBooleanProperty object as argument.
   

Sample code:

MgPropertyCollection props= new MgPropertyCollection();

MgBooleanProperty boolProp = new MgBooleanProperty("prop1", true);

bool result = props.Remove(boolProp);

Expect result: false

Actual result: true

[trevorwekel]

Fixed by

​http://trac.osgeo.org/mapguide/changeset/2524