Convert another caller of "allocation" to LOCK_COMMAND

... as the "allocation" code jumped to now does UNLOCK_COMMAND instead of blas_unlock

driver/others/memory.c

@@ -1056,12 +1056,13 @@ void *blas_memory_alloc(int procpos){
 
   do {
     if (!memory[position].used && (memory[position].pos == mypos)) {
-
-      blas_lock(&memory[position].lock);
+      LOCK_COMMAND(&alloc_lock);
+/*      blas_lock(&memory[position].lock);*/
 
       if (!memory[position].used) goto allocation;
 
-      blas_unlock(&memory[position].lock);
+      UNLOCK_COMMAND(&alloc_lock);
+/*      blas_unlock(&memory[position].lock);*/
     }
 
     position ++;