correct python indentation

Signed-off-by: Sergey Isakov <isakov-sl@bk.ru>

Author: SergeySlice

BaseTools/Source/Python/AutoGen/GenMake.py

@@ -449,7 +449,7 @@ def __init__(self, ModuleAutoGen):
         self.GenFfsList                 = ModuleAutoGen.GenFfsList
         self.MacroList = ['FFS_OUTPUT_DIR', 'MODULE_GUID', 'OUTPUT_DIR']
         self.FfsOutputFileList = []
-		self.DependencyHeaderFileSet = set()
+        self.DependencyHeaderFileSet = set()
 
     # Compose a dict object containing information used to do replacement in template
     @property