network: fixed a wrong data type used for an option

Signed-off-by: Leonardo Alminana <[email protected]>

include/fluent-bit/flb_network.h

@@ -40,7 +40,7 @@
 /* Network connection setup */
 struct flb_net_setup {
     /* enable/disable keepalive support */
-    char keepalive;
+    int keepalive;
 
     /* max time in seconds that a keepalive connection can be idle */
     int keepalive_idle_timeout;