Fix python directory key error in case build rule family is not defined.

git-svn-id: https://buildtools.tianocore.org/svn/buildtools/trunk/BaseTools@1667 7335b38e-4728-0410-8992-fb3ffe349368

diff --git a/Source/Python/AutoGen/AutoGen.py b/Source/Python/AutoGen/AutoGen.py
index 5e816de..ca95744 100755 (executable)
--- a/Source/Python/AutoGen/AutoGen.py
+++ b/Source/Python/AutoGen/AutoGen.py
@@ -1071,7 +1071,7 @@ class PlatformAutoGen(AutoGen):
             # if tool chain family doesn't match, skip it
             if Family != "":
                 FamilyIsNull = False
-                if self.ToolDefinition[Tool][TAB_TOD_DEFINES_BUILDRULEFAMILY] != "":
+                if self.ToolDefinition[Tool].get(TAB_TOD_DEFINES_BUILDRULEFAMILY, "") != "":
                     if Family != self.ToolDefinition[Tool][TAB_TOD_DEFINES_BUILDRULEFAMILY]:
                         continue
                 elif Family != self.ToolDefinition[Tool][TAB_TOD_DEFINES_FAMILY]: