BaseTools: Fix indentation in CParser.py file

Mixing usage of spaces and tabs may confuse the python
compiler/interpreter.

Contributed-under: TianoCore Contribution Agreement 1.1
Signed-off-by: Gary Lin <glin@suse.com>
Cc: Yonghong Zhu <yonghong.zhu@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Reviewed-by: Yonghong Zhu <yonghong.zhu@intel.com>
(cherry picked from commit 877251b421)

BaseTools/Source/Python/Ecc/CParser.py

@@ -98,16 +98,9 @@ class CParser(Parser):
         Parser.__init__(self, input)
         self.ruleMemo = {}
 
-	self.function_definition_stack = []
-	self.postfix_expression_stack = []
+        self.function_definition_stack = []
+        self.postfix_expression_stack = []
 
-
-
-                
-
-
-              
-            
     def printTokenInfo(self, line, offset, tokenText):
     	print str(line)+ ',' + str(offset) + ':' + str(tokenText)