Only ever display one crash handler dialog at a time

SwingUI/src/main/java/org/peakaboo/ui/swing/app/CrashHandler.java

@@ -20,7 +20,7 @@
 public class CrashHandler {
 
 	private static CrashHandler handler;
-
+		
 	public static void init() {
 		if (handler != null) return; //subsequent calls do nothing
 		handler = new CrashHandler();
@@ -34,6 +34,9 @@ public static CrashHandler get() {
 
 	private Bugsnag bugsnag;
 
+	/* Only allow one crash report dialog at a time to prevent spamming */
+	private boolean inUse = false;
+
 	public CrashHandler() {
 		var devbuild = Version.RELEASE_TYPE != Version.ReleaseType.RELEASE;
 		boolean autosubmit=DesktopSettings.isCrashAutoreporting() || devbuild;
@@ -76,11 +79,14 @@ public void handle(String message, Throwable throwable) {
 			});
 		};
 
-
-		ErrorDialog errorDialog = new ErrorDialog(null, "Peakaboo Error", message, throwable, doReport);
-
-		errorDialog.setModal(true);
-		errorDialog.setVisible(true); //stalls here until dialog closes
+		if (!inUse) {
+			inUse = true;
+			ErrorDialog errorDialog = new ErrorDialog(null, "Peakaboo Error", message, throwable, doReport);
+			errorDialog.setModal(true);
+			errorDialog.setVisible(true); //stalls here until dialog closes
+			inUse = false;
+		}
+
 
 		if (! reported.get() && DesktopSettings.isCrashAutoreporting()) {
 			//When autoreporting is on, we report even when the user doesn't send additional feedback