Use correct one line budget in rewrite_closure_block

src/expr.rs

@@ -750,7 +750,7 @@ fn rewrite_closure_block(
 
     // The body of the closure is big enough to be block indented, that
     // means we must re-format.
-    let block_shape = shape.block().with_max_width(context.config);
+    let block_shape = shape.block();
     let block_str = try_opt!(block.rewrite(&context, block_shape));
     Some(format!("{} {}", prefix, block_str))
 }

tests/source/configs-closure_block_indent_threshold--1.rs

@@ -0,0 +1,5 @@
+// rustfmt-closure_block_indent_threshold: -1
+
+fn issue1755() {
+    b.iter(|| dfkljdklgjdlkfgjdlkgjldkjfgkdjgldjfgkljdfklgjlkdjfgkljdflkgjlkdfjgdjfsas::expect("parse"));
+}

tests/target/configs-closure_block_indent_threshold--1.rs

@@ -0,0 +1,7 @@
+// rustfmt-closure_block_indent_threshold: -1
+
+fn issue1755() {
+    b.iter(|| {
+        dfkljdklgjdlkfgjdlkgjldkjfgkdjgldjfgkljdfklgjlkdjfgkljdflkgjlkdfjgdjfsas::expect("parse")
+    });
+}