bugfix : fix level 4 compiler warnings for Visual studio 2012.

git-svn-id: https://assimp.svn.sourceforge.net/svnroot/assimp/trunk@1323 67173fc5-114c-0410-ac8e-9d2fd5bffc1f

code/SMDLoader.cpp

@@ -684,7 +684,7 @@ void SMDImporter::ParseFile()
 	const char* szCurrent = mBuffer;
 
 	// read line per line ...
-	while (true)
+	for ( ;; )
 	{
 		if(!SkipSpacesAndLineEnd(szCurrent,&szCurrent)) break;
 
@@ -750,7 +750,7 @@ unsigned int SMDImporter::GetTextureIndex(const std::string& filename)
 void SMDImporter::ParseNodesSection(const char* szCurrent,
 	const char** szCurrentOut)
 {
-	while (true)
+	for ( ;; )
 	{
 		// "end\n" - Ends the nodes section
 		if (0 == ASSIMP_strincmp(szCurrent,"end",3) &&
@@ -772,7 +772,7 @@ void SMDImporter::ParseTrianglesSection(const char* szCurrent,
 {
 	// Parse a triangle, parse another triangle, parse the next triangle ...
 	// and so on until we reach a token that looks quite similar to "end"
-	while (true)
+	for ( ;; )
 	{
 		if(!SkipSpacesAndLineEnd(szCurrent,&szCurrent)) break;
 
@@ -790,7 +790,7 @@ void SMDImporter::ParseVASection(const char* szCurrent,
 	const char** szCurrentOut)
 {
 	unsigned int iCurIndex = 0;
-	while (true)
+	for ( ;; )
 	{
 		if(!SkipSpacesAndLineEnd(szCurrent,&szCurrent)) break;
 
@@ -833,7 +833,7 @@ void SMDImporter::ParseSkeletonSection(const char* szCurrent,
 	const char** szCurrentOut)
 {
 	int iTime = 0;
-	while (true)
+	for ( ;; )
 	{
 		if(!SkipSpacesAndLineEnd(szCurrent,&szCurrent)) break;
 
@@ -887,7 +887,7 @@ void SMDImporter::ParseNodeInfo(const char* szCurrent,
 	else ++szCurrent;
 
 	const char* szEnd = szCurrent;
-	while (true)
+	for ( ;; )
 	{
 		if (bQuota && '\"' == *szEnd)
 		{

code/STLLoader.cpp

@@ -203,7 +203,7 @@ void STLImporter::LoadASCIIFile()
 	pMesh->mNormals  = new aiVector3D[pMesh->mNumVertices];
 	
 	unsigned int curFace = 0, curVertex = 3;
-	while (true)
+	for ( ;; )
 	{
 		// go to the next token
 		if(!SkipSpacesAndLineEnd(&sz))

code/StringComparison.h

@@ -87,7 +87,7 @@ inline unsigned int ASSIMP_itoa10( char* out, unsigned int max, int32_t number)
 			// print all future zeroes from now
 			mustPrint = true;	
 
-			*out++ = '0'+digit;
+			*out++ = '0'+static_cast<char>(digit);
 
 			++written;
 			number -= digit*cur;