Cleanup: Blenlib, Clang-Tidy else-after-return fixes (incomplete)

This addresses warnings from Clang-Tidy's `readability-else-after-return`
rule in the `source/blender/blenlib` module. Not all warnings are
addressed in this commit.

No functional changes.

1 files changed, 2 insertions, 6 deletions

diff --git a/source/blender/blenlib/intern/DLRB_tree.c b/source/blender/blenlib/intern/DLRB_tree.c
index 6810601d527..b0c3379ac97 100644
--- a/source/blender/blenlib/intern/DLRB_tree.c
+++ b/source/blender/blenlib/intern/DLRB_tree.c
@@ -299,9 +299,7 @@ static DLRBT_Node *get_grandparent(DLRBT_Node *node)
   if (node && node->parent) {
     return node->parent->parent;
   }
-  else {
-    return NULL;
-  }
+  return NULL;
 }
 
 /* get the sibling node (e.g. if node is left child of parent, return right child of parent) */
@@ -311,9 +309,7 @@ static DLRBT_Node *get_sibling(DLRBT_Node *node)
     if (node == node->parent->left) {
       return node->parent->right;
     }
-    else {
-      return node->parent->left;
-    }
+    return node->parent->left;
   }
 
   /* sibling not found */