git: a5783589a611 - main - graphics/gmt: fix build on armv7

The branch main has been updated by fuz:

URL: https://cgit.FreeBSD.org/ports/commit/?id=a5783589a611edd6c2e15a71bdd740a0206058e6

commit a5783589a611edd6c2e15a71bdd740a0206058e6
Author:     Robert Clausecker <fuz@FreeBSD.org>
AuthorDate: 2023-07-28 20:07:02 +0000
Commit:     Robert Clausecker <fuz@FreeBSD.org>
CommitDate: 2023-07-30 22:59:08 +0000

    graphics/gmt: fix build on armv7
    
    Fix wrong code for armv7 mcontext_t PC retrieval.
    
    Approved by:    portmgr (build fix blanket)
    MFH:            2023Q3
---
 graphics/gmt/files/patch-src_gmt__common__sighandler.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/graphics/gmt/files/patch-src_gmt__common__sighandler.c b/graphics/gmt/files/patch-src_gmt__common__sighandler.c
new file mode 100644
index 000000000000..f4368e5d2fa8
--- /dev/null
+++ b/graphics/gmt/files/patch-src_gmt__common__sighandler.c
@@ -0,0 +1,11 @@
+--- src/gmt_common_sighandler.c.orig	2023-07-28 19:57:48 UTC
++++ src/gmt_common_sighandler.c
+@@ -84,7 +84,7 @@ void backtrace_symbols_fd(void *const *buffer, int siz
+ # ifdef __x86_64__
+ #  define UC_IP(uc) ((void *) (uc)->uc_mcontext.mc_rip)
+ # elif defined( __arm__)
+-#  define UC_IP(uc) ((void *) (uc)->uc_mcontext.arm_pc)
++#  define UC_IP(uc) ((void *) (uc)->uc_mcontext.__gregs[_REG_PC])
+ # elif defined( __aarch64__)
+ #  define UC_IP(uc) ((void *) (uc)->uc_mcontext.mc_gpregs.gp_elr)
+ # elif defined(__ppc__)