[PATCH] powerpc/ptrace: fix empty-body warning

[Mathieu Malaterre]

In commit a225f1567405 ("powerpc/ptrace: replace ptrace_report_syscall()
with a tracehook call") an empty body if(); was added.

Replace ; with {} to remove a warning (treated as error) reported by gcc
using W=1:

  arch/powerpc/kernel/ptrace.c: In function ‘do_syscall_trace_enter’:
  arch/powerpc/kernel/ptrace.c:3281:4: error: suggest braces around empty body 
in an ‘if’ statement [-Werror=empty-body]

Fixes: a225f1567405 ("powerpc/ptrace: replace ptrace_report_syscall() with a 
tracehook call")
Signed-off-by: Mathieu Malaterre <ma...@debian.org>
---
 arch/powerpc/kernel/ptrace.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/kernel/ptrace.c b/arch/powerpc/kernel/ptrace.c
index 8314e8fed0ee..e1988892b3e7 100644
--- a/arch/powerpc/kernel/ptrace.c
+++ b/arch/powerpc/kernel/ptrace.c
@@ -3277,8 +3277,8 @@ long do_syscall_trace_enter(struct pt_regs *regs)
                 * avoid clobbering any register also, thus, not 'gotoing'
                 * skip label.
                 */
-               if (tracehook_report_syscall_entry(regs))
-                       ;
+               if (tracehook_report_syscall_entry(regs)) {
+               }
                return -1;
        }
 
-- 
2.19.2