remove if-let chains

Signed-off-by: Hayashi Mikihiro <34ttrweoewiwe28@gmail.com>

Author: Hmikihiro

src/tools/rust-analyzer/crates/ide-assists/src/handlers/replace_is_method_with_if_let_method.rs

@@ -64,12 +64,13 @@ pub(crate) fn replace_is_method_with_if_let_method(
                     let pat = make.tuple_struct_pat(make.ident_path(text), [var_pat.into()]);
                     let let_expr = make.expr_let(pat.into(), receiver);
 
-                    if let Some(cap) = ctx.config.snippet_cap
-                        && let Some(ast::Pat::TupleStructPat(pat)) = let_expr.pat()
-                        && let Some(first_var) = pat.fields().next()
-                    {
-                        let placeholder = edit.make_placeholder_snippet(cap);
-                        editor.add_annotation(first_var.syntax(), placeholder);
+                    if let Some(cap) = ctx.config.snippet_cap {
+                        if let Some(ast::Pat::TupleStructPat(pat)) = let_expr.pat() {
+                            if let Some(first_var) = pat.fields().next() {
+                                let placeholder = edit.make_placeholder_snippet(cap);
+                                editor.add_annotation(first_var.syntax(), placeholder);
+                            }
+                        }
                     }
 
                     editor.replace(call_expr.syntax(), let_expr.syntax());