[compiler-rt] Fix broken interception unittest

[etienneb]

Summary

This patch is fixing a broken unittest which make the win64 bot failing.

The bug was introduce here:

https://reviews.llvm.org/D23046

The interception code is not the same in 32-bit and in 64-bit.
The added unittest can only be patched on 32-bits.

[rnk]

Lgtm. Sorry, I thought the x64 interception tests were broken on win10 for unrelated reasons.

lib/interception/tests/interception_win_test.cc

TEST(Interception, PatchableFunction) {
   EXPECT_TRUE(TestFunctionPatching(kPatchableCode1, override));
   EXPECT_TRUE(TestFunctionPatching(kPatchableCode2, override));
 #if SANITIZER_WINDOWS64
   EXPECT_FALSE(TestFunctionPatching(kPatchableCode3, override));
 #else
   EXPECT_TRUE(TestFunctionPatching(kPatchableCode3, override));
 #endif
   EXPECT_TRUE(TestFunctionPatching(kPatchableCode4, override));
+#if SANITIZER_WINDOWS64
+  EXPECT_FALSE(TestFunctionPatching(kPatchableCode5, override));
+#else
   EXPECT_TRUE(TestFunctionPatching(kPatchableCode5, override));
+#endif
 
   EXPECT_FALSE(TestFunctionPatching(kUnpatchableCode1, override));
   EXPECT_FALSE(TestFunctionPatching(kUnpatchableCode2, override));
   EXPECT_FALSE(TestFunctionPatching(kUnpatchableCode3, override));
   EXPECT_FALSE(TestFunctionPatching(kUnpatchableCode4, override));
   EXPECT_FALSE(TestFunctionPatching(kUnpatchableCode5, override));
   EXPECT_FALSE(TestFunctionPatching(kUnpatchableCode6, override));
 }