Make the escape key clear the ModuleBrowser search field if it contains text.

src/app/ModuleBrowser.cpp

@@ -247,8 +247,13 @@ struct BrowserSearchField : ui::TextField {
 	void onSelectKey(const event::SelectKey &e) override {
 		if (e.action == GLFW_PRESS) {
 			if (e.key == GLFW_KEY_ESCAPE) {
-				BrowserOverlay *overlay = getAncestorOfType<BrowserOverlay>();
-				overlay->hide();
+				if (text != "") {
+					setText("");
+				}
+				else {
+					BrowserOverlay *overlay = getAncestorOfType<BrowserOverlay>();
+					overlay->hide();
+				}
 				e.consume(this);
 			}
 		}