tracing/histogram: Fix semicolon.cocci warnings

kernel/trace/trace_events_hist.c:6039:2-3: Unneeded semicolon

 Remove unneeded semicolon.

Generated by: scripts/coccinelle/misc/semicolon.cocci

Link: https://lkml.kernel.org/r/20211030005615.GA41257@3074f0d39c61

Fixes: c5eac6e ("tracing/histogram: Simplify handling of .sym-offset in expressions")
CC: Kalesh Singh <kaleshsingh@google.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>

Author: intel-lab-lkp

kernel/trace/trace_events_hist.c

@@ -6084,7 +6084,7 @@ static int event_hist_trigger_func(struct event_command *cmd_ops,
 	while (start) {
 		*(start + 4) = 'X';
 		start = strstr(start + 11, ".sym-offset");
-	};
+	}
 
 	attrs = parse_hist_trigger_attrs(file->tr, trigger);
 	if (IS_ERR(attrs))