Fix coverity findings: fix usage after free.

code/SMDLoader.cpp

@@ -74,20 +74,22 @@ static const aiImporterDesc desc = {
 // ------------------------------------------------------------------------------------------------
 // Constructor to be privately used by Importer
 SMDImporter::SMDImporter()
-    : configFrameID(),
+: configFrameID(),
-    mBuffer(),
+mBuffer(),
-    pScene(),
+pScene( nullptr ),
-    iFileSize(),
+iFileSize( 0 ),
-    iSmallestFrame(),
+iSmallestFrame( -1 ),
-    dLengthOfAnim(),
+dLengthOfAnim( 0.0 ),
-    bHasUVs(),
+bHasUVs(false ),
-    iLineNumber()
+iLineNumber(-1) {
-{}
+    // empty
+}
 
 // ------------------------------------------------------------------------------------------------
 // Destructor, private as well
-SMDImporter::~SMDImporter()
+SMDImporter::~SMDImporter() {
-{}
+    // empty
+}
 
 // ------------------------------------------------------------------------------------------------
 // Returns whether the class can handle the format of the given file.
@@ -133,9 +135,8 @@ void SMDImporter::InternReadFile( const std::string& pFile, aiScene* pScene, IOS
     // Allocate storage and copy the contents of the file to a memory buffer
     this->pScene = pScene;
 
-    std::vector<char> buff(iFileSize+1);
+    mBuffer.resize( iFileSize + 1 );
-    TextFileToBuffer(file.get(),buff);
+    TextFileToBuffer(file.get(), mBuffer );
-    mBuffer = &buff[0];
 
     iSmallestFrame = (1 << 31);
     bHasUVs = true;
@@ -694,7 +695,7 @@ void SMDImporter::CreateOutputMaterials()
 // Parse the file
 void SMDImporter::ParseFile()
 {
-    const char* szCurrent = mBuffer;
+    const char* szCurrent = &mBuffer[0];
 
     // read line per line ...
     for ( ;; )

code/SMDLoader.h

@@ -372,7 +372,7 @@ private:
     unsigned int configFrameID;
 
     /** Buffer to hold the loaded file */
-    const char* mBuffer;
+    std::vector<char> mBuffer;
 
     /** Output scene to be filled
     */