test: Update test with current error message

These errors where previously generated by typestate, but there seem to
be other passes that cover this now.

Author: brson

src/test/compile-fail/block-deinitializes-upvar.rs

@@ -1,7 +1,7 @@
-// error-pattern:tried to deinitialize a variable declared in a different
+// error-pattern:moving out of immutable upvar
 fn force(f: fn()) { f(); }
 fn main() {
-    let x = @{x: 17, y: 2};
+    let mut x = @{x: 17, y: 2};
     let y = @{x: 5, y: 5};
 
     force({|| x <- y;});

src/test/compile-fail/issue-1965.rs

@@ -1,4 +1,4 @@
-// error-pattern:tried to deinitialize a variable declared in a different
+// error-pattern:moving out of immutable upvar
 fn test(-x: uint) {}
 
 fn main() {