Fix Whitespace (#6063)

* Fix Whitespace

No functional changes. This commit removes trailing spaces, undesired line breaks, and formatting screwups.

* Remove more useless line breaks in license (500 out of 630 license copies do NOT use double line breaks here)

---------

Co-authored-by: Krishty <krishty@krishty.com>
Co-authored-by: Kim Kulling <kimkulling@users.noreply.github.com>

code/PostProcessing/SplitLargeMeshes.cpp

@@ -102,9 +102,9 @@ void SplitLargeMeshesProcess_Triangle::SetupProperties( const Importer* pImp) {
 void SplitLargeMeshesProcess_Triangle::UpdateNode(aiNode* pcNode, const std::vector<std::pair<aiMesh*, unsigned int> >& avList) {
     if (pcNode == nullptr) {
         ASSIMP_LOG_WARN("UpdateNode skipped, nullptr detected.");
-        return; 
+        return;
     }
-    
+
     // for every index in out list build a new entry
     std::vector<unsigned int> aiEntries;
     aiEntries.reserve(pcNode->mNumMeshes + 1);