fix: dont crash if bash treesitter parser is not installed

ftplugin/curl.lua

@@ -1,7 +1,11 @@
 vim.bo.syntax = "sh"
 vim.bo.commentstring = "# %s"
 
-vim.treesitter.language.register("bash", "curl")
+local bash_lang_installed, _ = pcall(vim.treesitter.language.register, "bash", "curl")
+
+if bash_lang_installed then
+	return
+end
 
 -- Custom highlights for curl-specific elements
 local query = vim.treesitter.query.parse(