[meta] Fix outdented_line in srcgen;

cranelift/codegen/meta/src/srcgen.rs

@@ -80,9 +80,9 @@ impl Formatter {
     /// Get a string containing whitespace outdented one level. Used for
     /// lines of code that are inside a single indented block.
     fn _get_outdent(&mut self) -> String {
-        self.indent_push();
-        let s = self.get_indent();
         self.indent_pop();
+        let s = self.get_indent();
+        self.indent_push();
         s
     }
 
@@ -99,7 +99,7 @@ impl Formatter {
 
     /// Emit a line outdented one level.
     pub fn _outdented_line(&mut self, s: &str) {
-        let new_line = format!("{}{}", self._get_outdent(), s);
+        let new_line = format!("{}{}\n", self._get_outdent(), s);
         self.lines.push(new_line);
     }