Use __ with attribute __noreturn__ to avoid colliding with noreturn.

Change-Id: I5a73ec69b580b2e70b2c68177078fa56b8353c19
diff --git a/include/android/log.h b/include/android/log.h
index 1c171b7..2956e6e 100644
--- a/include/android/log.h
+++ b/include/android/log.h
@@ -124,7 +124,7 @@
 void __android_log_assert(const char *cond, const char *tag,
                           const char *fmt, ...)
 #if defined(__GNUC__)
-    __attribute__ ((noreturn))
+    __attribute__ ((__noreturn__))
 #ifdef __USE_MINGW_ANSI_STDIO
 #if __USE_MINGW_ANSI_STDIO
     __attribute__ ((format(gnu_printf, 3, 4)))