[Qemu-trivial] [PATCH for-2.4] disas/arm-a64: Add missing compiler attribute GCC_FMT_ATTR

[Stefan Weil]

Type fprintf_function which fits here was defined with this attribute.

Signed-off-by: Stefan Weil <address@hidden>
---

This is an optional trivial patch for 2.4 which fixes compiler warnings
in my build environment (with -Wextra).

 disas/arm-a64.cc | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/disas/arm-a64.cc b/disas/arm-a64.cc
index b0803f9..b57256b 100644
--- a/disas/arm-a64.cc
+++ b/disas/arm-a64.cc
@@ -42,7 +42,7 @@ public:
         stream_ = stream;
     }
 
-    void SetPrintf(int (*printf_fn)(FILE *, const char *, ...)) {
+    void SetPrintf(fprintf_function printf_fn) {
         printf_ = printf_fn;
     }
 
@@ -53,7 +53,7 @@ protected:
     }
 
 private:
-    int (*printf_)(FILE *, const char *, ...);
+    fprintf_function printf_;
     FILE *stream_;
 };
 
-- 
2.1.4