0006270: Warp3D leaks memory on mono based systems

Thanks Hiro Lecker for a patch to reduce memory useage with Warp3D map module

CONTRIBUTORS.txt

@@ -92,6 +92,7 @@ what it is today.
 * Flyte Xevious
 * Garmin Kawaguichi
 * Gryc Ueusp
+* Hiro Lecker
 * Imaze Rhiano
 * Intimidated
 * Jeremy Bongio (IBM)

OpenSim/Region/CoreModules/World/Warp3DMap/Warp3DImageModule.cs

@@ -208,6 +208,9 @@ namespace OpenSim.Region.CoreModules.World.Warp3DMap
                     bitmap = ImageUtils.ResizeImage(origBitmap, viewport.Width, viewport.Height);
             }
 
+            GC.Collect();
+            m_log.Debug("[WARP 3D IMAGE MODULE]: GC.Collect()");
+
             return bitmap;
         }