Codechange: Simplify some calls to DrawStringMultiLine(). (#13643)

Sometimes the bottom is passed as UINT16_MAX for no reason. In this case just pass the rect.

Other times it's to extend the window height; in that case just extend the rect itself.

src/object_gui.cpp

@@ -234,6 +234,7 @@ public:
 
 				Rect tr = r;
 				const int bottom = tr.bottom;
+				/* Use all the available space past the rect, so that we can enlarge the window if needed. */
 				tr.bottom = INT16_MAX;
 				tr.top = DrawBadgeNameList(tr, spec->badges, GSF_OBJECTS);
 
@@ -247,9 +248,6 @@ public:
 							StringID message = GetGRFStringID(spec->grf_prop.grfid, GRFSTR_MISC_GRF_TEXT + callback_res);
 							if (message != STR_NULL && message != STR_UNDEFINED) {
 								StartTextRefStackUsage(spec->grf_prop.grffile, 6);
-								/* Use all the available space left from where we stand up to the
-								 * end of the window. We ALSO enlarge the window if needed, so we
-								 * can 'go' wild with the bottom of the window. */
 								tr.top = DrawStringMultiLine(tr, message, TC_ORANGE);
 								StopTextRefStackUsage();
 							}