Update prebuilts for RS compat lib.

Change-Id: Ieb867f63b27792d1c309952e9d86bc719bfadcd3
diff --git a/renderscript/clang-include/smmintrin.h b/renderscript/clang-include/smmintrin.h
index 2fab50e..498f6f0 100644
--- a/renderscript/clang-include/smmintrin.h
+++ b/renderscript/clang-include/smmintrin.h
@@ -195,10 +195,10 @@
 /* SSE4 Insertion and Extraction from XMM Register Instructions.  */
 #define _mm_insert_ps(X, Y, N) __builtin_ia32_insertps128((X), (Y), (N))
 #define _mm_extract_ps(X, N) (__extension__                      \
-                              ({ union { int i; float f; } __t;  \
+                              ({ union { int __i; float __f; } __t;  \
                                  __v4sf __a = (__v4sf)(X);       \
-                                 __t.f = __a[N];                 \
-                                 __t.i;}))
+                                 __t.__f = __a[N];                 \
+                                 __t.__i;}))
 
 /* Miscellaneous insert and extract macros.  */
 /* Extract a single-precision float from X at index N into D.  */