[asan] more renaming

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@157747 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/asan/asan_thread.cc b/lib/asan/asan_thread.cc
index da5ab3d..a910253 100644
--- a/lib/asan/asan_thread.cc
+++ b/lib/asan/asan_thread.cc
@@ -116,8 +116,8 @@
     is_fake_stack = true;
   }
   uptr aligned_addr = addr & ~(__WORDSIZE/8 - 1);  // align addr.
-  uint8_t *shadow_ptr = (uint8_t*)MemToShadow(aligned_addr);
-  uint8_t *shadow_bottom = (uint8_t*)MemToShadow(bottom);
+  u8 *shadow_ptr = (u8*)MemToShadow(aligned_addr);
+  u8 *shadow_bottom = (u8*)MemToShadow(bottom);
 
   while (shadow_ptr >= shadow_bottom &&
       *shadow_ptr != kAsanStackLeftRedzoneMagic) {