Fix for SF #491953 (Andrew Dalke): ScrolledText.py has TabError

Untabified.
diff --git a/Lib/lib-tk/ScrolledText.py b/Lib/lib-tk/ScrolledText.py
index 5d92734..a14ae4d 100644
--- a/Lib/lib-tk/ScrolledText.py
+++ b/Lib/lib-tk/ScrolledText.py
@@ -34,9 +34,9 @@
         self.vbar['command'] = self.yview
 
         # Copy geometry methods of self.frame -- hack!
-	methods = Pack.__dict__.keys()
-	methods = methods + Grid.__dict__.keys()
-	methods = methods + Place.__dict__.keys()
+        methods = Pack.__dict__.keys()
+        methods = methods + Grid.__dict__.keys()
+        methods = methods + Place.__dict__.keys()
 
         for m in methods:
             if m[0] != '_' and m != 'config' and m != 'configure':