make old-images tiny (almost free them) when resizing the array:

important when you resize large arrays;
TODO: do not resize buffers that already have the correct size


git-svn-id: https://pd-gem.svn.sourceforge.net/svnroot/pd-gem/trunk/Gem@2098 49b2a0ca-c541-4d49-a7ef-d785e4371512

Author: zmoelnig

src/Pixes/pix_buffer.cpp

@@ -117,8 +117,14 @@ void pix_buffer :: resizeMess(int newsize)
     size=newsize;
 
   for(i=0; i<size; i++) {
-    if(0!=m_buffer[i].data)
+    if(0!=m_buffer[i].data) {
+      // copy the image
       m_buffer[i].copy2Image(buffer+i);
+      m_buffer[i].xsize=1;
+      m_buffer[i].ysize=1;
+      // "free" the old image
+      m_buffer[i].allocate();
+    }
   }
 
   delete[]m_buffer;