Fix the special case for the first line

This special case broke indentation of `where` clauses.

Author: mrBliss

rust-mode-tests.el

@@ -603,6 +603,17 @@ impl<'a, K, Q: ?Sized, V, S> Index<&'a Q> for HashMap<K, V, S>
 }
 "))
 
+(ert-deftest indent-align-where-clauses-first-line ()
+  (test-indent
+   "fn foo1(a: A, b: B) -> A
+    where A: Clone + Default, B: Eq {
+    let body;
+    Foo {
+        bar: 3
+    }
+}
+"))
+
 (ert-deftest indent-square-bracket-alignment ()
   (test-indent
    "

rust-mode.el

@@ -444,10 +444,11 @@ function or trait.  When nil, where will be aligned with fn or trait."
 
                        (save-excursion
                          (rust-rewind-irrelevant)
-                         ;; Point is now at the end of the previous ine
+                         ;; Point is now at the end of the previous line
                          (or
-                          ;; If we are at the first line, no indentation is needed, so stay at baseline...
-                          (= 1 (line-number-at-pos (point)))
+                          ;; If we are at the start of the buffer, no
+                          ;; indentation is needed, so stay at baseline...
+                          (= (point) 1)
                           ;; ..or if the previous line ends with any of these:
                           ;;     { ? : ( , ; [ }
                           ;; then we are at the beginning of an expression, so stay on the baseline...