overflow warning typo

Summary: bin_size should be 0 not -1 for naive rasterization. See https://github.com/facebookresearch/pytorch3d/issues/1129

Reviewed By: patricklabatut

Differential Revision: D35077115

fbshipit-source-id: b81ff74f47c78429977802f7dcadfd1b96676f8c

pytorch3d/csrc/rasterize_coarse/rasterize_coarse.cu

@@ -195,7 +195,7 @@ __global__ void RasterizeCoarseCudaKernel(
             "To solve, "
             "try increasing max_faces_per_bin / max_points_per_bin, "
             "decreasing bin_size, "
-            "or setting bin_size to -1 to use the naive rasterization.";
+            "or setting bin_size to 0 to use the naive rasterization.";
         printf(warning);
         continue;
       }