apps/gcov: Alloc to strip 0

Signed-off-by: wangmingrong1 <wangmingrong1@xiaomi.com>
diff --git a/system/gcov/gcov.c b/system/gcov/gcov.c
index 64acb3c..3b66cfc 100644
--- a/system/gcov/gcov.c
+++ b/system/gcov/gcov.c
@@ -71,7 +71,7 @@
 
 static void gcov_dump(FAR const char * path, FAR const char *strip)
 {
-  if (path == NULL || access(path, F_OK) != 0 || atoi(strip) <= 0)
+  if (path == NULL || access(path, F_OK) != 0 || atoi(strip) < 0)
     {
       fprintf(stderr, "ERROR: Invalid parameter\n");
       return;
@@ -157,7 +157,7 @@
 
 int main(int argc, FAR char *argv[])
 {
-  FAR const char *strip = "99";
+  FAR const char *strip = CONFIG_COVERAGE_DEFAULT_PREFIX_STRIP;
   FAR const char *path = NULL;
   int option;