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/main.m b/Mac/PythonLauncher/main.m
index 6841433..04b4d73 100755
--- a/Mac/PythonLauncher/main.m
+++ b/Mac/PythonLauncher/main.m
@@ -11,7 +11,7 @@
 
 int main(int argc, const char *argv[])
 {
-	char *home = getenv("HOME");
-	if (home) chdir(home);
+    char *home = getenv("HOME");
+    if (home) chdir(home);
     return NSApplicationMain(argc, argv);
 }