Don't check for null pointer in calls to free

According to the C99 specification section 7.20.3.2 paragraph 2:

> If ptr is a null pointer, no action occurs.

So we do not need to check that the pointer is a null pointer.

1 files changed, 9 insertions, 10 deletions

diff --git a/regcomp.c b/regcomp.c
index b4dbddfa01..b2254c26a0 100644
--- a/regcomp.c
+++ b/regcomp.c
@@ -195,8 +195,7 @@ unset_addr_list_init(UnsetAddrList* uslist, int size)
 static void
 unset_addr_list_end(UnsetAddrList* uslist)
 {
-  if (IS_NOT_NULL(uslist->us))
-    xfree(uslist->us);
+  xfree(uslist->us);
 }
 
 static int
@@ -5649,12 +5648,12 @@ extern void
 onig_free_body(regex_t* reg)
 {
   if (IS_NOT_NULL(reg)) {
-    if (IS_NOT_NULL(reg->p))                xfree(reg->p);
-    if (IS_NOT_NULL(reg->exact))            xfree(reg->exact);
-    if (IS_NOT_NULL(reg->int_map))          xfree(reg->int_map);
-    if (IS_NOT_NULL(reg->int_map_backward)) xfree(reg->int_map_backward);
-    if (IS_NOT_NULL(reg->repeat_range))     xfree(reg->repeat_range);
-    if (IS_NOT_NULL(reg->chain))            onig_free(reg->chain);
+    xfree(reg->p);
+    xfree(reg->exact);
+    xfree(reg->int_map);
+    xfree(reg->int_map_backward);
+    xfree(reg->repeat_range);
+    onig_free(reg->chain);
 
 #ifdef USE_NAMED_GROUP
     onig_names_free(reg);
@@ -6001,8 +6000,8 @@ onig_compile(regex_t* reg, const UChar* pattern, const UChar* pattern_end,
   }
 
   onig_node_free(root);
-  if (IS_NOT_NULL(scan_env.mem_nodes_dynamic))
-      xfree(scan_env.mem_nodes_dynamic);
+  xfree(scan_env.mem_nodes_dynamic);
+
   return r;
 }