revert toBuffer() changes

src/Canvas.cc

@@ -109,27 +109,17 @@ static cairo_status_t
 toBuffer(void *c, const uint8_t *data, unsigned len) {
  closure_t *closure = (closure_t *) c;
 
-  // Olaf (2011-02-21): Store more data, but don't call realloc() on every chunk.
+ if (closure->len) {
-  // Also, keep track of how much memory is used
+   closure->data = (uint8_t *) realloc(closure->data, closure->len + len);
-  if (closure->len + len > closure->max_len) {
+   if (!closure->data) return CAIRO_STATUS_NO_MEMORY;
-    uint8_t * new_data;
-    unsigned new_max_len = closure->max_len;
-
-    // Round up the buffer size to be a multiple of 1024 bytes.
-    new_max_len = (closure->max_len + len + 1023) & ~1023;
-
-    new_data = (uint8_t *) realloc(closure->data, new_max_len);
-    if (new_data == NULL) return CAIRO_STATUS_NO_MEMORY;
-
-    // Keep track of how much more memory we just allocated.
-    V8::AdjustAmountOfExternalAllocatedMemory(new_max_len - closure->max_len);
-
-    closure->data = new_data;
-    closure->max_len = new_max_len;
-  }
-
    memcpy(closure->data + closure->len, data, len);
    closure->len += len;
+ } else {
+   closure->data = (uint8_t *) malloc(len);
+   if (!closure->data) return CAIRO_STATUS_NO_MEMORY;
+   memcpy(closure->data, data, len);
+   closure->len += len;
+ }
 
  return CAIRO_STATUS_SUCCESS;
 }