gdb/gdbsupport: make xstrprintf and xstrvprintf return a unique_ptr

The motivation is to reduce the number of places where unmanaged
pointers are returned from allocation type routines.  All of the
callers are updated.

There should be no user visible changes after this commit.

1 files changed, 4 insertions, 10 deletions

diff --git a/gdb/frv-tdep.c b/gdb/frv-tdep.c
index c74ea68..c5eac6b 100644
--- a/gdb/frv-tdep.c
+++ b/gdb/frv-tdep.c
@@ -182,11 +182,8 @@ new_variant (void)
      in the G packet.  If we need more in the future, we'll add them
      elsewhere.  */
   for (r = acc0_regnum; r <= acc7_regnum; r++)
-    {
-      char *buf;
-      buf = xstrprintf ("acc%d", r - acc0_regnum);
-      var->register_names[r] = buf;
-    }
+    var->register_names[r]
+      = xstrprintf ("acc%d", r - acc0_regnum).release ();
 
   /* accg0 - accg7: These are one byte registers.  The remote protocol
      provides the raw values packed four into a slot.  accg0123 and
@@ -195,11 +192,8 @@ new_variant (void)
      likely not want to see these raw values.  */
 
   for (r = accg0_regnum; r <= accg7_regnum; r++)
-    {
-      char *buf;
-      buf = xstrprintf ("accg%d", r - accg0_regnum);
-      var->register_names[r] = buf;
-    }
+    var->register_names[r]
+      = xstrprintf ("accg%d", r - accg0_regnum).release ();
 
   /* msr0 and msr1.  */