review fixes

Author: AGulev

extension-admob/src/admob_ios.mm

@@ -547,7 +547,7 @@ void Initialize_Ext(dmExtension::Params* params, const char* defoldUserAgent) {
     admobExtAppOpenAdDelegate = [[AdmobExtAppOpenAdDelegate alloc] init];
     admobAppDelegate = [[AdMobAppDelegate alloc] init];
 
-    appOpenAdId = (char*)dmConfigFile::GetString(params->m_ConfigFile, "admob.app_open_ios", 0);
+    appOpenAdId = (char*)dmConfigFile::GetString(params->m_ConfigFile, "admob.app_open_ios", "");
     if (appOpenAdId && strlen(appOpenAdId) > 0) {
         LoadAppOpen(appOpenAdId, true);
     }

main/ads.gui_script

@@ -69,6 +69,7 @@ local function set_block_height(height)
     gui.set_size(height_b_node, size)
 end
 
+if admob then
 local EVENT_TEXTS = {
     [admob.EVENT_CLOSED] =              "EVENT_CLOSED: %s closed",
     [admob.EVENT_FAILED_TO_SHOW] =      "EVENT_FAILED_TO_SHOW: %s failed to show",
@@ -81,6 +82,8 @@ local EVENT_TEXTS = {
     [admob.EVENT_CLICKED] =             "EVENT_CLICKED: %s clicked",
     [admob.EVENT_JSON_ERROR] =          "EVENT_JSON_ERROR: %s Internal NE json error",
 }
+end
+
 local function print_event(ad_type, message)
     local text = EVENT_TEXTS[message.event]
     if text then