STORM-1879: Inventory gear menu remains on screen after floater is closed

indra/llui/llfloater.cpp

@@ -748,6 +748,10 @@ void LLFloater::closeFloater(bool app_quitting)
 					dependee->setFocus(TRUE);
 				}
 			}
+
+			// STORM-1879: since this floater has focus, treat the closeFloater- call
+			// like a click on the close-button, and close gear- and contextmenus
+			LLMenuGL::sMenuContainer->hideMenus();
 		}
 
 		dirtyRect();

indra/llui/lltoggleablemenu.cpp

@@ -57,7 +57,9 @@ void LLToggleableMenu::handleVisibilityChange (BOOL curVisibilityIn)
 	S32 x,y;
 	LLUI::getMousePositionLocal(LLUI::getRootView(), &x, &y);
 
-	if (!curVisibilityIn && mButtonRect.pointInRect(x, y))
+	// STORM-1879: also check MouseCapture to see if the button was really
+        // clicked (otherwise the VisibilityChange was triggered via keyboard shortcut)
+	if (!curVisibilityIn && mButtonRect.pointInRect(x, y) && gFocusMgr.getMouseCapture())
 	{
 		mClosedByButtonClick = true;
 	}