fix a bug when ngx_cpymem() returns a cast type:
p = (type *) ngx_cpymem(...)
diff --git a/src/core/ngx_string.h b/src/core/ngx_string.h
index 86a9601..8218714 100644
--- a/src/core/ngx_string.h
+++ b/src/core/ngx_string.h
@@ -89,7 +89,7 @@
#if (NGX_MEMCPY_LIMIT)
void *ngx_memcpy(void *dst, void *src, size_t n);
-#define ngx_cpymem(dst, src, n) ((u_char *) ngx_memcpy(dst, src, n)) + (n)
+#define ngx_cpymem(dst, src, n) (((u_char *) ngx_memcpy(dst, src, n)) + (n))
#else
@@ -99,7 +99,7 @@
* icc8 compile memcpy(d, s, 4) to the inline "mov"es or XMM moves.
*/
#define ngx_memcpy(dst, src, n) (void) memcpy(dst, src, n)
-#define ngx_cpymem(dst, src, n) ((u_char *) memcpy(dst, src, n)) + (n)
+#define ngx_cpymem(dst, src, n) (((u_char *) memcpy(dst, src, n)) + (n))
#endif
