Fix Android/x86 build.

src/lj_arch.h

@@ -511,7 +511,7 @@
 #endif
 
 /* Various workarounds for embedded operating systems or weak C runtimes. */
-#if (defined(__ANDROID__) && !defined(LJ_TARGET_X86ORX64)) || defined(__symbian__) || LJ_TARGET_XBOX360 || LJ_TARGET_WINDOWS
+#if defined(__ANDROID__) || defined(__symbian__) || LJ_TARGET_XBOX360 || LJ_TARGET_WINDOWS
 #define LUAJIT_NO_LOG2
 #endif
 #if defined(__symbian__) || LJ_TARGET_WINDOWS