Simplify print_end

Mark-Simulacrum · Mark-Simulacrum · commit 57cf7a2e5728 · 2019-07-10T07:12:29.000-04:00
Presumably the code was from an older age of Rust and can now be written
much simpler.
diff --git a/src/libsyntax/print/pp.rs b/src/libsyntax/print/pp.rs
@@ -521,9 +521,7 @@ impl Printer {
 
     fn print_end(&mut self) {
         debug!("print End -> pop End");
-        let print_stack = &mut self.print_stack;
-        assert!(!print_stack.is_empty());
-        print_stack.pop().unwrap();
+        self.print_stack.pop().unwrap();
     }
 
     fn print_break(&mut self, b: BreakToken, l: isize) {

Original file line number	Diff line number	Diff line change
`@@ -521,9 +521,7 @@ impl Printer {`
`521`	`521`
`522`	`522`	`fn print_end(&mut self) {`
`523`	`523`	`debug!("print End -> pop End");`
`524`		`- let print_stack = &mut self.print_stack;`
`525`		`- assert!(!print_stack.is_empty());`
`526`		`- print_stack.pop().unwrap();`
	`524`	`+ self.print_stack.pop().unwrap();`
`527`	`525`	`}`
`528`	`526`
`529`	`527`	`fn print_break(&mut self, b: BreakToken, l: isize) {`