Fix static-code-analysis findings.

code/BaseProcess.h

@@ -211,20 +211,16 @@ private:
  * should be executed. If the function returns true, the class' Execute()
  * function is called subsequently.
  */
-class ASSIMP_API_WINONLY BaseProcess
-{
+class ASSIMP_API_WINONLY BaseProcess {
     friend class Importer;
 
 public:
-
     /** Constructor to be privately used by Importer */
-    BaseProcess();
+    BaseProcess() noexcept;
 
     /** Destructor, private as well */
     virtual ~BaseProcess();
 
-public:
-
     // -------------------------------------------------------------------
     /** Returns whether the processing step is present in the given flag.
      * @param pFlags The processing flags the importer was called with. A