Check malloc results, Contribute to cesanta/dev#3726

PUBLISHED_FROM=309be4a56754250406dd48f1abd30b68776f5c7e

docs/c-api/mbuf.h/intro.md

@@ -2,6 +2,15 @@
 title: "Memory Buffers"
 symbol_kind: "intro"
 decl_name: "mbuf.h"
+items:
+  - { type: file, name: mbuf_init.md }
+  - { type: file, name: mbuf_free.md }
+  - { type: file, name: mbuf_append.md }
+  - { type: file, name: mbuf_insert.md }
+  - { type: file, name: mbuf_remove.md }
+  - { type: file, name: mbuf_resize.md }
+  - { type: file, name: mbuf_trim.md }
+  - { type: file, name: struct_mbuf.md }
 ---
 
 Mbufs are mutable/growing memory buffers, like C++ strings.

docs/c-api/mbuf.h/items.json

@@ -1,40 +0,0 @@
-{
-    "items": [
-        {
-            "type": "markdown",
-            "name": "intro.md"
-        },
-        {
-            "type": "markdown",
-            "name": "mbuf_init.md"
-        },
-        {
-            "type": "markdown",
-            "name": "mbuf_free.md"
-        },
-        {
-            "type": "markdown",
-            "name": "mbuf_append.md"
-        },
-        {
-            "type": "markdown",
-            "name": "mbuf_insert.md"
-        },
-        {
-            "type": "markdown",
-            "name": "mbuf_remove.md"
-        },
-        {
-            "type": "markdown",
-            "name": "mbuf_resize.md"
-        },
-        {
-            "type": "markdown",
-            "name": "mbuf_trim.md"
-        },
-        {
-            "type": "markdown",
-            "name": "struct_mbuf.md"
-        }
-    ]
-}