[PATCH] fprobe/samples: make sample_probe static

[sunliming]

This symbol is not used outside of fprobe_example.c, so marks it static.

Fixes the following warning:

sparse warnings: (new ones prefixed by >>)
>> samples/fprobe/fprobe_example.c:23:15: sparse: sparse: symbol 'sample_probe'
was not declared. Should it be static?

Reported-by: kernel test robot <lkp@xxxxxxxxx>
Signed-off-by: sunliming <sunliming@xxxxxxxxxx>
---
 samples/fprobe/fprobe_example.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/samples/fprobe/fprobe_example.c b/samples/fprobe/fprobe_example.c
index 24d3cf109140..123cfd83d4c6 100644
--- a/samples/fprobe/fprobe_example.c
+++ b/samples/fprobe/fprobe_example.c
@@ -20,7 +20,7 @@
 
 #define BACKTRACE_DEPTH 16
 #define MAX_SYMBOL_LEN 4096
-struct fprobe sample_probe;
+static struct fprobe sample_probe;
 
 static char symbol[MAX_SYMBOL_LEN] = "kernel_clone";
 module_param_string(symbol, symbol, sizeof(symbol), 0644);
-- 
2.25.1