Fix Rust 1.97 imaging gate lints

crates/libremetaverse-prim-mesher/src/prim_mesher.rs

@@ -856,11 +856,11 @@ impl Profile {
         for f in &mut self.faces {
             std::mem::swap(&mut f.v1, &mut f.v3);
         }
-        if self.calc_vertex_normals {
-            if let Some(n) = self.vertex_normals.last_mut() {
+        if self.calc_vertex_normals
+            && let Some(n) = self.vertex_normals.last_mut()
+        {
             n.z = -n.z;
         }
-        }
         self.face_normal.x = -self.face_normal.x;
         self.face_normal.y = -self.face_normal.y;
         self.face_normal.z = -self.face_normal.z;

crates/libremetaverse-prim-mesher/src/sculpt.rs

@@ -251,7 +251,7 @@ impl SculptMesh {
         }
         let original_width = rows[0].len();
         if sculpt_type != SculptMeshSculptType::Plane {
-            if rows.len() % 2 == 0 {
+            if rows.len().is_multiple_of(2) {
                 for row in &mut rows {
                     row.push(row[0]);
                 }
@@ -264,7 +264,7 @@ impl SculptMesh {
         let top_pole = rows[0][original_width / 2];
         let bottom_pole = rows[rows.len() - 1][original_width / 2];
         if sculpt_type == SculptMeshSculptType::Sphere {
-            if rows.len() % 2 == 0 {
+            if rows.len().is_multiple_of(2) {
                 let count = rows[0].len();
                 rows.insert(0, vec![top_pole; count]);
                 rows.push(vec![bottom_pole; count]);

crates/libremetaverse-types/src/collections.rs

@@ -1213,11 +1213,11 @@ impl TokenBucket {
         if state.content.wrapping_sub(amount) < 0 {
             return Ok(false);
         }
-        if let Some(parent) = &self.parent {
-            if !parent.remove_tokens_with_int32(amount)? {
+        if let Some(parent) = &self.parent
+            && !parent.remove_tokens_with_int32(amount)?
+        {
             return Ok(false);
         }
-        }
         state.content = state.content.wrapping_sub(amount);
         Ok(true)
     }