(svn r10810) -Fix (r10097): Add a comma between different cargo types if an articulated vehicle carries more than one cargo.

src/roadveh_gui.cpp

@@ -145,6 +145,8 @@ static void RoadVehDetailsWndProc(Window *w, WindowEvent *e)
 
 					if (!first) strecat(capacity, ", ", lastof(capacity));
 					strecat(capacity, buffer, lastof(capacity));
+
+					first = false;
 				}
 			}