am 2754389d: gralloc-qsd8k: make sure that we never try to allocatio 0 bytes

Merge commit '2754389d0e7638b3065ecb3c965b1f262d2205ed' into eclair-plus-aosp

* commit '2754389d0e7638b3065ecb3c965b1f262d2205ed':
  gralloc-qsd8k: make sure that we never try to allocatio 0 bytes

libgralloc-qsd8k/gralloc.cpp

@@ -386,6 +386,9 @@ static int gralloc_alloc(alloc_device_t* dev,
         size = alignedw * alignedh * bpp;
     }
 
+    if ((ssize_t)size <= 0)
+        return -EINVAL;
+
     int err;
     if (usage & GRALLOC_USAGE_HW_FB) {
         err = gralloc_alloc_framebuffer(dev, size, usage, pHandle);