Issue #18377: Code cleanup in Python Launcher

This changeset fixes a number of compiler warnings in the Python Launcher
binary for OSX. It also cleans up whitespace usage in those sources.
diff --git a/Mac/PythonLauncher/MyAppDelegate.m b/Mac/PythonLauncher/MyAppDelegate.m
index a5ba751..e75fb06 100644
--- a/Mac/PythonLauncher/MyAppDelegate.m
+++ b/Mac/PythonLauncher/MyAppDelegate.m
@@ -33,7 +33,7 @@
 
 - (BOOL)shouldShowUI
 {
-    // if this call comes before applicationDidFinishLaunching: we 
+    // if this call comes before applicationDidFinishLaunching: we
     // should terminate immedeately after starting the script.
     if (!initial_action_done)
         should_terminate = YES;
@@ -62,7 +62,7 @@
     static NSString *extensions[] = { @"py", @"pyw", @"pyc", NULL};
     NSString **ext_p;
     int i;
-    
+
     if ([[NSUserDefaults standardUserDefaults] boolForKey: @"SkipFileBindingTest"])
         return;
     ourUrl = [NSURL fileURLWithPath: [[NSBundle mainBundle] bundlePath]];
@@ -92,5 +92,5 @@
         }
     }
 }
-        
+
 @end