Lua: luaL_checkstring does not return NULL

Removed all checks for NULL strings to cleanup the code.

Change-Id: Ia890cd9b206296f586e85214f07765f14984580b
Reviewed-on: https://code.wireshark.org/review/4632
Tested-by: Stig Bjørlykke <stig@bjorlykke.org>
Reviewed-by: Stig Bjørlykke <stig@bjorlykke.org>

1 files changed, 0 insertions, 10 deletions

diff --git a/epan/wslua/wslua_struct.c b/epan/wslua/wslua_struct.c
index 06e5c203c7..db7e957a9c 100644
--- a/epan/wslua/wslua_struct.c
+++ b/epan/wslua/wslua_struct.c
@@ -622,11 +622,6 @@ WSLUA_CONSTRUCTOR Struct_tohex (lua_State *L) {
      just not fromhex. In fact, we should accept/coerce a Int64/UInt64 here too someday. */
   s = luaL_checklstring(L, WSLUA_ARG_Struct_tohex_BYTESTRING, &len);
 
-  if (!s) {
-    WSLUA_ARG_ERROR(Struct_tohex,BYTESTRING,"must be a Lua string");
-    return 0;
-  }
-
   lowercase = wslua_optbool(L,WSLUA_OPTARG_Struct_tohex_LOWERCASE,FALSE);
   sep = luaL_optstring(L,WSLUA_OPTARG_Struct_tohex_SEPARATOR,NULL);
 
@@ -645,11 +640,6 @@ WSLUA_CONSTRUCTOR Struct_fromhex (lua_State *L) {
   /* luaL_checklstring coerces the argument to a string, and we don't want to do that */
   s = wslua_checklstring_only(L, WSLUA_ARG_Struct_fromhex_HEXBYTES, &len);
 
-  if (!s) {
-    WSLUA_ARG_ERROR(Struct_fromhex,HEXBYTES,"must be a Lua string");
-    return 0;
-  }
-
   sep = luaL_optstring(L,WSLUA_OPTARG_Struct_fromhex_SEPARATOR,NULL);
 
   wslua_hex2bin(L, s, (guint)len, sep);