Remove an unused bkcerr_code constructor parameter

The RestrictionSet parameter of the err_borrowed_pointer_too_short
constructor isn't  actually used, so it can be removed.

Author: Cameron Zwarich

src/librustc/middle/borrowck/gather_loans/restrictions.rs

@@ -133,7 +133,7 @@ impl<'a> RestrictionsContext<'a> {
                             cause: self.cause,
                             cmt: cmt_base,
                             code: err_borrowed_pointer_too_short(
-                                self.loan_region, lt, restrictions)});
+                                self.loan_region, lt)});
                     return Safe;
                 }
                 Safe
@@ -148,7 +148,7 @@ impl<'a> RestrictionsContext<'a> {
                             cause: self.cause,
                             cmt: cmt_base,
                             code: err_borrowed_pointer_too_short(
-                                self.loan_region, lt, restrictions)});
+                                self.loan_region, lt)});
                     return Safe;
                 }
 

src/librustc/middle/borrowck/mod.rs

@@ -310,8 +310,7 @@ impl Repr for RestrictionSet {
 pub enum bckerr_code {
     err_mutbl,
     err_out_of_scope(ty::Region, ty::Region), // superscope, subscope
-    err_borrowed_pointer_too_short(
-        ty::Region, ty::Region, RestrictionSet), // loan, ptr
+    err_borrowed_pointer_too_short(ty::Region, ty::Region), // loan, ptr
 }
 
 // Combination of an error code and the categorization of the expression
@@ -711,7 +710,7 @@ impl<'a> BorrowckCtxt<'a> {
                     suggestion);
             }
 
-            err_borrowed_pointer_too_short(loan_scope, ptr_scope, _) => {
+            err_borrowed_pointer_too_short(loan_scope, ptr_scope) => {
                 let descr = match opt_loan_path(&err.cmt) {
                     Some(lp) => {
                         format!("`{}`", self.loan_path_to_str(&*lp))