Ignore the .svn directory when building swig wrappers (bug #23917)

llvm-svn: 240942
diff --git a/lldb/scripts/finishSwigWrapperClasses.py b/lldb/scripts/finishSwigWrapperClasses.py
index f11d53d..4aa2e50 100644
--- a/lldb/scripts/finishSwigWrapperClasses.py
+++ b/lldb/scripts/finishSwigWrapperClasses.py
@@ -262,6 +262,9 @@
 
     # Skip the directory that contains the interface files.
     listDirs.remove('interface')
+    # and the svn directory.
+    if '.svn' in listDirs:
+        listDirs.remove('.svn')
 
     if gbDbgFlag:
         print strScriptLangsFound,