build/Darwin: Fix epic typo fail.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@134036 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Makefile.rules b/Makefile.rules
index 46a3f1b..19520dd 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -1377,7 +1377,7 @@
 #---------------------------------------------------------
 
 ifeq ($(HOST_OS),Darwin)
-ifdef TOOL_ORDER_FINE
+ifdef TOOL_ORDER_FILE
 
 LD.Flags += -Wl,-order_file,$(TOOL_ORDER_FILE)