Fix macOS build error

Author: ccmywish

include/chsrc.h

@@ -779,8 +779,11 @@ chsrc_ensure_root ()
       if (0!=atoi(euid)) goto not_root;
       else return;
     }
+
+  char *msg = NULL;
 not_root:
-  char *msg = CliOpt_InEnglish ? "Use sudo before the command or switch to root to ensure the necessary permissions" : "请在命令前使用 sudo 或切换为root用户来保证必要的权限";
+  msg = CliOpt_InEnglish ? "Use sudo before the command or switch to root to ensure the necessary permissions"
+                         : "请在命令前使用 sudo 或切换为root用户来保证必要的权限";
   chsrc_error (msg);
   exit (Exit_UserCause);
 }

include/xy.h

@@ -300,9 +300,11 @@ _xy_str_to_terminal_style (int style, const char *str)
       color_fmt_str = "\e[9m%s\e[0m"; break;
     }
 
+
+  size_t len = 0;
 new_str:
   // -2 把中间%s减掉
-  size_t len = strlen (color_fmt_str) - 2;
+  len = strlen (color_fmt_str) - 2;
   char *buf = malloc (strlen (str) + len + 1);
   sprintf (buf, color_fmt_str, str);
   return buf;