trace-graph: Free last_record in cpu plot on restart

The restart of drawing a cpu plot may still have a left over record.
Free it before initializing a new drawing.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/trace-plot-cpu.c b/trace-plot-cpu.c
index 4d06aa6..9033515 100644
--- a/trace-plot-cpu.c
+++ b/trace-plot-cpu.c
@@ -200,6 +200,7 @@ static void cpu_plot_start(struct graph_info *ginfo, struct graph_plot *plot,
         cpu = cpu_info->cpu;
         cpu_info->last_time = 0ULL;
         cpu_info->last_pid = -1;
+        free_record(cpu_info->last_record);
         cpu_info->last_record = NULL;
 }
 
@@ -470,6 +471,7 @@ static void add_cpu_plot(struct graph_info *ginfo, gint cpu)
         char label[100];
 
         cpu_info = malloc_or_die(sizeof(*cpu_info));
+        memset(cpu_info, 0, sizeof(*cpu_info));
         cpu_info->cpu = cpu;
 
         snprintf(label, 100, "CPU %d", cpu);