Changes to allow compilation with -Wwrite-strings. That compiler option
is not used for testcases, just for valgrind proper.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@13137 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/helgrind/hg_main.c b/helgrind/hg_main.c
index c5bea8c..f5e3625 100644
--- a/helgrind/hg_main.c
+++ b/helgrind/hg_main.c
@@ -1951,9 +1951,9 @@
          this is a real lock operation (not a speculative "tryLock"
          kind of thing).  Duh.  Deadlock coming up; but at least
          produce an error message. */
-      HChar* errstr = "Attempt to re-lock a "
-                      "non-recursive lock I already hold";
-      HChar* auxstr = "Lock was previously acquired";
+      const HChar* errstr = "Attempt to re-lock a "
+                            "non-recursive lock I already hold";
+      const HChar* auxstr = "Lock was previously acquired";
       if (lk->acquired_at) {
          HG_(record_error_Misc_w_aux)( thr, errstr, auxstr, lk->acquired_at );
       } else {