remove const

geometry.c

@@ -554,6 +554,12 @@ JSC_CCALL(geometry_rect_transform,
   // argv[1] = world_to_projection (16 floats)
   size_t byte_len;
   float *data12 = js_get_blob_data(js, &byte_len, argv[1]);
+  if (data12 == -1)
+    return JS_EXCEPTION;
+
+  if (byte_len == 0)
+    return JS_ThrowTypeError(js, "Matrix blob contains no data");
+  
   HMM_Mat4 wp; memcpy(wp.Elements, data12, sizeof(wp.Elements));
 
   // make our two corners at z=0
@@ -1008,8 +1014,11 @@ JSC_CCALL(geometry_transform_xy_blob,
   // Get blob data
   size_t xy_size;
   float *xy_data = (float*)js_get_blob_data(js, &xy_size, xy_blob);
-  if (!xy_data) {
-    return JS_ThrowTypeError(js, "Failed to get XY blob data");
+  if ((intptr_t)xy_data == -1) {
+    return JS_EXCEPTION;
+  }
+  if (!xy_data || xy_size == 0) {
+    return JS_ThrowTypeError(js, "XY blob contains no data");
   }
   
   // Calculate number of vertices (each vertex has 2 floats: x, y)