Fixed Indentation in build.py

Author: Mohit Athwani

build.py

@@ -459,7 +459,7 @@
     'TestFoundation/Resources/NSURLTestData.plist',
     'TestFoundation/Resources/Test.plist',
     'TestFoundation/Resources/NSStringTestData.txt',
-	'TestFoundation/Resources/NSString-UTF16-BE-data.txt',
+    'TestFoundation/Resources/NSString-UTF16-BE-data.txt',
     'TestFoundation/Resources/NSXMLDocumentTestData.xml',
     'TestFoundation/Resources/PropertyList-1.0.dtd',
     'TestFoundation/Resources/NSXMLDTDTestData.xml',