Stage 1 of clang compiler warning patches.

SoObjects/Contacts/SOGoContactEntryPhoto.m

@@ -59,7 +59,7 @@
 
       [response setHeader: [self davContentType] forKey: @"content-type"];
       [response setHeader: [NSString stringWithFormat:@" %d",
-                                     [data length]]
+                                     (int)[data length]]
                    forKey: @"content-length"];
       [response setContent: data];
     }