Fix T94852: Geometry Proximity crash when unsuccessful

Before rB644e6c7a3e99ae1d43ed, `fill` was used in the error
cases, but now `fill_indices` is used, which doesn't work when
the span is empty (when only one output is used). The fix is just
to check for that case.

1 files changed, 6 insertions, 2 deletions

diff --git a/source/blender/nodes/geometry/nodes/node_geo_proximity.cc b/source/blender/nodes/geometry/nodes/node_geo_proximity.cc
index 772638ef240..3f509942f7c 100644
--- a/source/blender/nodes/geometry/nodes/node_geo_proximity.cc
+++ b/source/blender/nodes/geometry/nodes/node_geo_proximity.cc
@@ -191,8 +191,12 @@ class ProximityFunction : public fn::MultiFunction {
     }
 
     if (!success) {
-      positions.fill_indices(mask, float3(0));
-      distances.fill_indices(mask, 0.0f);
+      if (!positions.is_empty()) {
+        positions.fill_indices(mask, float3(0));
+      }
+      if (!distances.is_empty()) {
+        distances.fill_indices(mask, 0.0f);
+      }
       return;
     }