(trunk) Fix visual glitch with the tracker inspector tab when there is no scrape address

NEWS

@@ -4,6 +4,10 @@ NEWS file for Transmission <http://www.transmissionbt.com/>
 - Mac
    + Display of decimal numbers matches system international settings
 
+1.11 (2008/xx/yy)
+- Mac
+   + Fix visual glitch with the tracker inspector tab when there is no scrape address
+
 1.10 (2008/03/28)
 - All Platforms
    + Stop torrents when downloading and the disk becomes full

macosx/InfoWindowController.m

@@ -1134,9 +1134,18 @@ typedef enum
     [fAnnounceNextField setStringValue: announceNext > 0 ? [NSString timeString: announceNext showSeconds: YES] : @""];
     
     //scrape fields
-    NSString * scrapeAddress = [[torrent trackerAddress] stringByAppendingString: [torrent trackerAddressScrape]];
+    NSString * scrapeAddressTail;
+    if ((scrapeAddressTail = [torrent trackerAddressScrape]))
+    {
+        NSString * scrapeAddress = [[torrent trackerAddress] stringByAppendingString: scrapeAddressTail];
         [fScrapeAddressField setStringValue: scrapeAddress];
         [fScrapeAddressField setToolTip: scrapeAddress];
+    }
+    else
+    {
+        [fScrapeAddressField setStringValue: @""];
+        [fScrapeAddressField setToolTip: @""];
+    }
     
     [fScrapeLastField setObjectValue: [torrent lastScrapeTime]];
     

macosx/Torrent.m

@@ -738,7 +738,7 @@ void completenessChangeCallback(tr_torrent * torrent, cp_status_t status, void *
 
 - (NSString *) trackerAddressScrape
 {
-    return [NSString stringWithUTF8String: fStat->tracker->scrape];
+    return fStat->tracker->scrape ? [NSString stringWithUTF8String: fStat->tracker->scrape] : nil;
 }
 
 - (NSDate *) lastScrapeTime