Fix #103: comment indentation after struct members

Correctly indent comments that come after struct members that do not
have a trailing comma.

Before:

    struct A {
        x: u8
            // TOO FAR
    }

After:

    struct A {
        x: u8
        // CORRECT
    }

Author: mrBliss

rust-mode-tests.el

@@ -600,6 +600,24 @@ fn foo() {
 "
    ))
 
+;; This is a test for #103: a comment after the last struct member that does
+;; not have a trailing comma. The comment used to be indented one stop too
+;; far.
+(ert-deftest indent-comment-after-last-struct-member ()
+  (test-indent
+   "
+struct A {
+    x: u8
+    // comment
+}
+
+struct A {
+    x: u8
+    /* comment */
+}
+"
+   ))
+
 (setq rust-test-motion-string
       "
 fn fn1(arg: int) -> bool {

rust-mode.el

@@ -369,7 +369,9 @@
                        ;; baseline as well (we are continuing an expression,
                        ;; but the "else" or "{" should align with the beginning
                        ;; of the expression it's in.)
-                       (looking-at "\\<else\\>\\|{")
+                       ;; Or, if this line starts a comment, stay on the
+                       ;; baseline as well.
+                       (looking-at "\\<else\\>\\|{\\|/[/*]")
 
                        (save-excursion
                          (rust-rewind-irrelevant)