Use constant instead of magic number

Mark-Simulacrum · Mark-Simulacrum · commit 73c1752b8e9a · 2019-07-10T07:13:22.000-04:00
diff --git a/src/librustc/hir/print.rs b/src/librustc/hir/print.rs
@@ -1267,7 +1267,7 @@ impl<'a> State<'a> {
             }
             hir::ExprKind::Match(ref expr, ref arms, _) => {
                 self.cbox(INDENT_UNIT);
-                self.ibox(4);
+                self.ibox(INDENT_UNIT);
                 self.word_nbsp("match");
                 self.print_expr_as_cond(&expr);
                 self.s.space();
diff --git a/src/libsyntax/print/pprust.rs b/src/libsyntax/print/pprust.rs
@@ -1976,7 +1976,7 @@ impl<'a> State<'a> {
             }
             ast::ExprKind::Match(ref expr, ref arms) => {
                 self.cbox(INDENT_UNIT);
-                self.ibox(4);
+                self.ibox(INDENT_UNIT);
                 self.word_nbsp("match");
                 self.print_expr_as_cond(expr);
                 self.s.space();

Original file line number	Diff line number	Diff line change
`@@ -1267,7 +1267,7 @@ impl<'a> State<'a> {`
`1267`	`1267`	`}`
`1268`	`1268`	`hir::ExprKind::Match(ref expr, ref arms, _) => {`
`1269`	`1269`	`self.cbox(INDENT_UNIT);`
`1270`		`- self.ibox(4);`
	`1270`	`+ self.ibox(INDENT_UNIT);`
`1271`	`1271`	`self.word_nbsp("match");`
`1272`	`1272`	`self.print_expr_as_cond(&expr);`
`1273`	`1273`	`self.s.space();`
Original file line number	Diff line number	Diff line change
`@@ -1976,7 +1976,7 @@ impl<'a> State<'a> {`
`1976`	`1976`	`}`
`1977`	`1977`	`ast::ExprKind::Match(ref expr, ref arms) => {`
`1978`	`1978`	`self.cbox(INDENT_UNIT);`
`1979`		`- self.ibox(4);`
	`1979`	`+ self.ibox(INDENT_UNIT);`
`1980`	`1980`	`self.word_nbsp("match");`
`1981`	`1981`	`self.print_expr_as_cond(expr);`
`1982`	`1982`	`self.s.space();`