bin: Add NULL checks

Signed-off-by: Hiroshi Hatake <hiroshi@chronosphere.io>

Author: cosmo0920

src/fluent-bit.c

@@ -1492,7 +1492,8 @@ static int flb_main_run(int argc, char **argv)
 #ifdef FLB_SYSTEM_WINDOWS
         flb_console_handler_set_ctx(ctx, cf_opts);
 #endif
-        if (dump_requested) {
+        if (dump_requested &&
+            ctx != NULL && ctx->config != NULL) {
             dump_requested = 0;
             flb_dump(ctx->config);
         }