[binutils-gdb] gdb: make use of scoped_restore in unduplicated_should_be_inserted

[Andrew Burgess <aburgess@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=aaa141a0a99fb63f6209da75257c58d94404a963

commit aaa141a0a99fb63f6209da75257c58d94404a963
Author: Andrew Burgess <aburgess@redhat.com>
Date:   Wed Oct 5 10:21:02 2022 +0100

    gdb: make use of scoped_restore in unduplicated_should_be_inserted
    
    I noticed that we could make use of a scoped_restore in the function
    unduplicated_should_be_inserted.  I've also converted the function
    return type from int to bool.
    
    This change shouldn't make any difference, as I don't think anything
    within should_be_inserted could throw an exception, but the change
    doesn't hurt, and will help keep us safe if anything ever changes in
    the future.
    
    Approved-By: Simon Marchi <simon.marchi@efficios.com>

Diff:
---
 gdb/breakpoint.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
index 84eeccd0cd7..bfa017f1398 100644
--- a/gdb/breakpoint.c
+++ b/gdb/breakpoint.c
@@ -2299,16 +2299,13 @@ should_be_inserted (struct bp_location *bl)
 /* Same as should_be_inserted but does the check assuming
    that the location is not duplicated.  */
 
-static int
+static bool
 unduplicated_should_be_inserted (struct bp_location *bl)
 {
-  int result;
-  const int save_duplicate = bl->duplicate;
+  scoped_restore restore_bl_duplicate
+    = make_scoped_restore (&bl->duplicate, 0);
 
-  bl->duplicate = 0;
-  result = should_be_inserted (bl);
-  bl->duplicate = save_duplicate;
-  return result;
+  return should_be_inserted (bl);
 }
 
 /* Parses a conditional described by an expression COND into an