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/ValidateDataStructure.cpp

@@ -134,7 +134,7 @@ inline void ValidateDSProcess::DoValidationEx(T **parray, unsigned int size,
     if (size == 0) {
         return;
     }
-        
+
     if (!parray) {
         ReportError("aiScene::%s is nullptr (aiScene::%s is %i)",
                 firstName, secondName, size);