[binutils-gdb] sim/m32r: fix unused variable warning on non-Linux hosts

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=1bf675bdada38c307058897be6f743ebd665fcdb

commit 1bf675bdada38c307058897be6f743ebd665fcdb
Author: Simon Marchi <[email protected]>
Date:   Mon Aug 17 11:16:10 2026 -0400

    sim/m32r: fix unused variable warning on non-Linux hosts
    
    When building on macOS, I get:
    
        /Users/smarchi/src/binutils-gdb/sim/m32r/traps.c:191:18: error: unused variable 'cb' [-Werror,-Wunused-variable]
          191 |   host_callback *cb = STATE_CALLBACK (sd);
              |                  ^~
    
    All the uses of `cb' in m32r_trap are inside the TRAP_LINUX_SYSCALL
    case, which is guarded by `#ifdef __linux__'.  Move the declaration
    inside that case, so that it only exists where it is used.
    
    Change-Id: I609850daf7fa60d92856988dffe7e314eb1d8a30
    Approved-By: Andrew Burgess <[email protected]>

Diff:
---
 sim/m32r/traps.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sim/m32r/traps.c b/sim/m32r/traps.c
index 7b98b245397..bb82ae80e2a 100644
--- a/sim/m32r/traps.c
+++ b/sim/m32r/traps.c
@@ -188,7 +188,6 @@ USI
 m32r_trap (SIM_CPU *current_cpu, PCADDR pc, int num)
 {
   SIM_DESC sd = CPU_STATE (current_cpu);
-  host_callback *cb = STATE_CALLBACK (sd);
 
   if (STATE_ENVIRONMENT (sd) == OPERATING_ENVIRONMENT)
     goto case_default;
@@ -217,6 +216,7 @@ m32r_trap (SIM_CPU *current_cpu, PCADDR pc, int num)
 #ifdef __linux__
     case TRAP_LINUX_SYSCALL:
       {
+	host_callback *cb = STATE_CALLBACK (sd);
 	CB_SYSCALL s;
 	unsigned int func, arg1, arg2, arg3, arg4, arg5, arg6, arg7;
 	int result, errcode;