Introduce mg_calloc

src/fs.c

@@ -3,12 +3,12 @@
 #include "str.h"
 
 struct mg_fd *mg_fs_open(struct mg_fs *fs, const char *path, int flags) {
-  struct mg_fd *fd = (struct mg_fd *) calloc(1, sizeof(*fd));
+  struct mg_fd *fd = (struct mg_fd *) mg_calloc(1, sizeof(*fd));
   if (fd != NULL) {
     fd->fd = fs->op(path, flags);
     fd->fs = fs;
     if (fd->fd == NULL) {
-      free(fd);
+      mg_free(fd);
       fd = NULL;
     }
   }
@@ -18,7 +18,7 @@ struct mg_fd *mg_fs_open(struct mg_fs *fs, const char *path, int flags) {
 void mg_fs_close(struct mg_fd *fd) {
   if (fd != NULL) {
     fd->fs->cl(fd->fd);
-    free(fd);
+    mg_free(fd);
   }
 }
 
@@ -27,10 +27,10 @@ struct mg_str mg_file_read(struct mg_fs *fs, const char *path) {
   void *fp;
   fs->st(path, &result.len, NULL);
   if ((fp = fs->op(path, MG_FS_READ)) != NULL) {
-    result.buf = (char *) calloc(1, result.len + 1);
+    result.buf = (char *) mg_calloc(1, result.len + 1);
     if (result.buf != NULL &&
         fs->rd(fp, (void *) result.buf, result.len) != result.len) {
-      free((void *) result.buf);
+      mg_free((void *) result.buf);
       result.buf = NULL;
     }
     fs->cl(fp);
@@ -66,7 +66,7 @@ bool mg_file_printf(struct mg_fs *fs, const char *path, const char *fmt, ...) {
   data = mg_vmprintf(fmt, &ap);
   va_end(ap);
   result = mg_file_write(fs, path, data, strlen(data));
-  free(data);
+  mg_free(data);
   return result;
 }