[gcc r13-5740] testsuite: Import objc-dg-prune in execute.exp

[gcc r13-5740] testsuite: Import objc-dg-prune in execute.exp

[Richard Sandiford]

https://gcc.gnu.org/g:3d451c4228cc80c5ec3c4601118a1cf7a6f3d231

commit r13-5740-g3d451c4228cc80c5ec3c4601118a1cf7a6f3d231
Author: Richard Sandiford <richard.sandiford@arm.com>
Date:   Wed Feb 8 13:40:29 2023 +0000

    testsuite: Import objc-dg-prune in execute.exp
    
    The GCC-local definition of gcc-dg-prune removes extra error messages,
    such as one from the linker warning about executable stacks.  This is
    then used by tool-specific pruners like objc-dg-prune, defined in
    objc-dg.exp.  However, objc/execute/execute.exp didn't include
    objc-dg.exp, meaning that the linker warning could trigger a
    failure in objc/execute/nested-func-1.m.
    
    gcc/testsuite/
            * objc/execute/execute.exp: Load objc-dg.exp.

Diff:
---
 gcc/testsuite/objc/execute/execute.exp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/gcc/testsuite/objc/execute/execute.exp b/gcc/testsuite/objc/execute/execute.exp
index 407b14a91d5..9724c32019e 100644
--- a/gcc/testsuite/objc/execute/execute.exp
+++ b/gcc/testsuite/objc/execute/execute.exp
@@ -23,6 +23,7 @@ if $tracelevel then {
 }
 
 # load support procs
+load_lib objc-dg.exp
 load_lib objc-torture.exp
 load_lib torture-options.exp