jit: disable ASAN for arm64 SIMD helper (#306)

While it would be ideal to disable only the expected buffer over
reads or let users add the generated functions to an exception list,
this will at least prevent the unexpected crash that ASAN would
trigger otherwise by default.

Author: carenas

src/pcre2_jit_neon_inc.h

@@ -82,6 +82,11 @@ POSSIBILITY OF SUCH DAMAGE.
 #  endif
 # endif
 
+#if (defined(__GNUC__) && __SANITIZE_ADDRESS__) \
+	|| (defined(__clang__) \
+	&& ((__clang_major__ == 3 && __clang_minor__ >= 3) || (__clang_major__ > 3)))
+__attribute__((no_sanitize_address))
+#endif
 static sljit_u8* SLJIT_FUNC FF_FUN(sljit_u8 *str_end, sljit_u8 **str_ptr, sljit_uw offs1, sljit_uw offs2, sljit_uw chars)
 #undef FF_FUN
 {