[pushed] Fix build errors in aix-thread.c

[Simon Marchi]

This patch fixes a few instances of unused variable and shadowed local
variable errors.

gdb/ChangeLog:

	* aix-thread.c (ptid_cmp): Remove unused variable.
	(get_signaled_thread): Likewise.
	(store_regs_user_thread): Likewise.
	(store_regs_kernel_thread): Likewise.
	(fetch_regs_kernel_thread): Remove shadowed variable.
---
 gdb/ChangeLog    | 8 ++++++++
 gdb/aix-thread.c | 7 -------
 2 files changed, 8 insertions(+), 7 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 1d747a7ad9..6e5176c63f 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,11 @@
+2019-02-26  Simon Marchi  <simon.marchi@efficios.com>
+
+	* aix-thread.c (ptid_cmp): Remove unused variable.
+	(get_signaled_thread): Likewise.
+	(store_regs_user_thread): Likewise.
+	(store_regs_kernel_thread): Likewise.
+	(fetch_regs_kernel_thread): Remove shadowed variable.
+
 2019-02-26  Andrew Burgess  <andrew.burgess@embecosm.com>
 
 	* features/riscv/32bit-cpu.xml: Add register numbers.
diff --git a/gdb/aix-thread.c b/gdb/aix-thread.c
index fe526cdc6f..655c085734 100644
--- a/gdb/aix-thread.c
+++ b/gdb/aix-thread.c
@@ -670,8 +670,6 @@ giter_accum (struct thread_info *thread, void *bufp)
 static int
 ptid_cmp (ptid_t ptid1, ptid_t ptid2)
 {
-  int pid1, pid2;
-
   if (ptid1.pid () < ptid2.pid ())
     return -1;
   else if (ptid1.pid () > ptid2.pid ())
@@ -707,7 +705,6 @@ get_signaled_thread (void)
 {
   struct thrdsinfo64 thrinf;
   tid_t ktid = 0;
-  int result = 0;
 
   while (1)
   {
@@ -1332,8 +1329,6 @@ fetch_regs_kernel_thread (struct regcache *regcache, int regno,
 	}
       else
 	{
-	  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
-
 	  if (!ptrace32 (PTT_READ_SPRS, tid, (uintptr_t) &sprs32, 0, NULL))
 	    memset (&sprs32, 0, sizeof (sprs32));
 	  supply_sprs32 (regcache, sprs32.pt_iar, sprs32.pt_msr, sprs32.pt_cr,
@@ -1501,7 +1496,6 @@ store_regs_user_thread (const struct regcache *regcache, pthdb_pthread_t pdtid)
   pthdb_context_t ctx;
   uint32_t int32;
   uint64_t int64;
-  double   dbl;
 
   if (debug_aix_thread)
     fprintf_unfiltered (gdb_stdlog, 
@@ -1593,7 +1587,6 @@ store_regs_kernel_thread (const struct regcache *regcache, int regno,
   double fprs[ppc_num_fprs];
   struct ptxsprs sprs64;
   struct ptsprs  sprs32;
-  int i;
 
   if (debug_aix_thread)
     fprintf_unfiltered (gdb_stdlog, 
-- 
2.17.1