revert to avert possible thread lock
diff --git a/MagickCore/quantize.c b/MagickCore/quantize.c
index 8008f5f..8cee689 100644
--- a/MagickCore/quantize.c
+++ b/MagickCore/quantize.c
@@ -2026,7 +2026,7 @@
   /*
     Initialize tree to describe color cube_info.
   */
-  cube_info=(CubeInfo *) AcquireQuantumMemory(1,sizeof(*cube_info));
+  cube_info=(CubeInfo *) AcquireMagickMemory(sizeof(*cube_info));
   if (cube_info == (CubeInfo *) NULL)
     return((CubeInfo *) NULL);
   (void) memset(cube_info,0,sizeof(*cube_info));
@@ -2125,7 +2125,7 @@
       /*
         Allocate a new queue of nodes.
       */
-      nodes=(Nodes *) AcquireQuantumMemory(1,sizeof(*nodes));
+      nodes=(Nodes *) AcquireMagickMemory(sizeof(*nodes));
       if (nodes == (Nodes *) NULL)
         return((NodeInfo *) NULL);
       nodes->nodes=(NodeInfo *) AcquireQuantumMemory(NodesInAList,