perf(output_file):replace FLB_FALSE as default value for line_append

Author: ekwongchum

plugins/out_file/file.c

@@ -98,7 +98,7 @@ static int cb_file_init(struct flb_output_instance *ins,
     ctx->delimiter = NULL;
     ctx->label_delimiter = NULL;
     ctx->template = NULL;
-    ctx->line_append = 0;
+    ctx->line_append = FLB_FALSE;
 
     ret = flb_output_config_map_set(ins, (void *) ctx);
     if (ret == -1) {
@@ -154,13 +154,6 @@ static int cb_file_init(struct flb_output_instance *ins,
         ctx->label_delimiter = ret_str;
     }
 
-    tmp = flb_output_get_property("line_append", ins);
-    if (tmp) {
-        if (!strcasecmp(tmp, "true")) {
-            ctx->line_append    = 1;
-        }
-    }
-
     /* Set the context */
     flb_output_set_context(ins, ctx);
 
@@ -325,7 +318,7 @@ static int template_output(FILE *fp, struct flb_time *tm, msgpack_object *obj,
     if (inbrace) {
         fputs(inbrace, fp);
     }
-    if (ctx->line_append == 0){
+    if (ctx->line_append == FLB_FALSE){
          fputs(NEWLINE, fp);
     }
     return 0;