nav: skip surface using textures/common/outside material (even if it has playerclip surfaceparm)

Author: illwieckz

tools/quake3/q3map2/nav.cpp

@@ -261,6 +261,10 @@ static void LoadBrushTris( std::vector<float> &verts, std::vector<int> &tris ) {
 				continue;
 			}
 
+			if ( !Q_stricmp( shader->shader, "textures/common/outside" ) ) {
+				continue;
+			}
+
 			if ( excludeCaulk && !Q_stricmp( shader->shader, "textures/common/caulk" ) ) {
 				continue;
 			}