Bug when from_lua snippets are loaded with incorrectly formatted content

[dwainm]

When loading a snippet that is incorrectly formatted, the error catching is bypassed ass it is checking the wrong value.

To reproduce:

Add this to your luasnip config:

require("luasnip.loaders.from_lua").load({paths = "~/snippets"})

Then add this to all.lua in that directory:

{
  "Standard Starter Template": {
    "prefix": "sst",
    "body": [
      "#include <stdlib.h>",
      "#include <stdio.h>",
      "",
      "int main(int argc, char *argv[])",
      "{$0",
      "",
      "\treturn EXIT_SUCCESS;",
      "}"
    ],
    "description": "Standard starter template for a tiny C program"
}
}

Open NVIM and see the error:

Error detected while processing /Users/dwain/.config/nvim/after/plugin/luasnip.lua:                                                                                                   
E5113: Error while calling lua chunk: ...ck/packer/start/LuaSnip/lua/luasnip/loaders/from_lua.lua:77: bad argument #1 to 'setfenv' (number expected, got nil)  

[L3MON4D3]

Nice catch, thank you for doing a PR immediately 👍