(fix) respect disabled state of sending rate-limiting (fixes #4198)

SoObjects/SOGo/SOGoSystemDefaults.m

@@ -578,12 +578,26 @@ _injectConfigurationFromFile (NSMutableDictionary *defaultsDict,
 //
 - (int) maximumMessageSubmissionCount
 {
-  return [self integerForKey: @"SOGoMaximumMessageSubmissionCount"];
+  NSUInteger v;
+
+  v = [self integerForKey: @"SOGoMaximumMessageSubmissionCount"];
+
+  if (!v)
+    return NSUIntegerMax;
+
+  return v;
 }
 
 - (int) maximumRecipientCount
 {
-  return [self integerForKey: @"SOGoMaximumRecipientCount"];
+  NSUInteger v;
+
+  v = [self integerForKey: @"SOGoMaximumRecipientCount"];
+
+  if (!v)
+    return NSUIntegerMax;
+
+  return v;
 }
 
 - (int) maximumSubmissionInterval

UI/MailerUI/UIxMailEditor.m

@@ -753,7 +753,7 @@ static NSArray *infoKeys = nil;
   NSDictionary *messageSubmissions;
   SOGoSystemDefaults *dd;
 
-  int messages_count, recipients_count;
+  NSUInteger messages_count, recipients_count;
 
   messageSubmissions = [[SOGoCache sharedCache] messageSubmissionsCountForLogin: [[context activeUser] login]];
   dd = [SOGoSystemDefaults sharedSystemDefaults];