shange snippet_opt to snippet

clippy_lints/src/large_stack_arrays.rs

@@ -7,7 +7,7 @@ use rustc::{declare_tool_lint, impl_lint_pass};
 use if_chain::if_chain;
 
 use crate::rustc_target::abi::LayoutOf;
-use crate::utils::{snippet_opt, span_help_and_lint};
+use crate::utils::{snippet, span_help_and_lint};
 
 declare_clippy_lint! {
     /// **What it does:** Checks for local arrays that may be too large.
@@ -58,7 +58,7 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for LargeStackArrays {
                     ),
                     &format!(
                         "consider allocating on the heap with vec!{}.into_boxed_slice()",
-                        snippet_opt(cx, expr.span).as_ref().map_or("[...]", String::as_str)
+                        snippet(cx, expr.span, "[...]")
                     ),
                 );
             }