Make use of a local pool to avoid over-memory usage

ActiveSync/SOGoMailObject+ActiveSync.m

@@ -30,6 +30,7 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include "SOGoMailObject+ActiveSync.h"
 
 #import <Foundation/NSArray.h>
+#import <Foundation/NSAutoreleasePool.h>
 #import <Foundation/NSCalendarDate.h>
 #import <Foundation/NSDictionary.h>
 #import <Foundation/NSException.h>
@@ -479,7 +480,9 @@ struct GlobalObjectId {
 //
 - (NSString *) activeSyncRepresentationInContext: (WOContext *) _context
 {
+  NSAutoreleasePool *pool;
   NSData *d, *globalObjId;
+  NSArray *attachmentKeys;
   NSMutableString *s;
   id value;
 
@@ -670,6 +673,10 @@ struct GlobalObjectId {
   // Body - namespace 17
   preferredBodyType = [[context objectForKey: @"BodyPreferenceType"] intValue];
 
+  // Make use of a local pool here as _preferredBodyDataUsingType:nativeType: will consume
+  // a significant amout of RAM and file descriptors
+  pool = [[NSAutoreleasePool alloc] init];
+
   nativeBodyType = 1;
   d = [self _preferredBodyDataUsingType: preferredBodyType  nativeType: &nativeBodyType];
   
@@ -710,8 +717,10 @@ struct GlobalObjectId {
       [s appendString: @"</Body>"];
     }
 
+  DESTROY(pool);
+
   // Attachments -namespace 16
-  NSArray *attachmentKeys = [self fetchFileAttachmentKeys];
+  attachmentKeys = [self fetchFileAttachmentKeys];
   if ([attachmentKeys count])
     {
       int i;