finish_installation doesn't show any UI if it's not relaunching, sinc…

…e those installations were not kicked off by user action.

finish_installation.m

@@ -137,11 +137,14 @@ - (void) install
 	NSBundle			*theBundle = [NSBundle bundleWithPath: [[NSFileManager defaultManager] stringWithFileSystemRepresentation: executablepath length:strlen(executablepath)]];
 	host = [[SUHost alloc] initWithBundle: theBundle];
 
-	SUStatusController*	statusCtl = [[SUStatusController alloc] initWithHost: host];	// We quit anyway after we've installed, so leak this for now.
-	[statusCtl setButtonTitle: SULocalizedString(@"Cancel Update",@"") target: nil action: Nil isDefault: NO];
-	[statusCtl beginActionWithTitle: SULocalizedString(@"Installing update...",@"")
-					maxProgressValue: 0 statusText: @""];
-	[statusCtl showWindow: self];
+    // Perhaps a poor assumption but: if we're not relaunching, we assume we shouldn't be showing any UI either. Because non-relaunching installations are kicked off without any user interaction, we shouldn't be interrupting them.
+    if (shouldRelaunch) {
+        SUStatusController*	statusCtl = [[SUStatusController alloc] initWithHost: host];	// We quit anyway after we've installed, so leak this for now.
+        [statusCtl setButtonTitle: SULocalizedString(@"Cancel Update",@"") target: nil action: Nil isDefault: NO];
+        [statusCtl beginActionWithTitle: SULocalizedString(@"Installing update...",@"")
+                        maxProgressValue: 0 statusText: @""];
+        [statusCtl showWindow: self];
+    }
 
 	[SUInstaller installFromUpdateFolder: [[NSFileManager defaultManager] stringWithFileSystemRepresentation: folderpath length: strlen(folderpath)]
 					overHost: host
@@ -156,7 +159,9 @@ - (void) installerFinishedForHost:(SUHost *)aHost
 
 - (void) installerForHost:(SUHost *)host failedWithError:(NSError *)error
 {
-	NSRunAlertPanel( @"", @"%@", @"OK", @"", @"", [error localizedDescription] );
+    // Perhaps a poor assumption but: if we're not relaunching, we assume we shouldn't be showing any UI either. Because non-relaunching installations are kicked off without any user interaction, we shouldn't be interrupting them.
+    if (shouldRelaunch)
+        NSRunAlertPanel( @"", @"%@", @"OK", @"", @"", [error localizedDescription] );
 	exit(EXIT_FAILURE);
 }