Fix garbage messages in SIB, MD2, and MDC loaders.

code/AssetLib/SIB/SIBImporter.cpp

@@ -68,6 +68,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/scene.h>
 #include <assimp/DefaultLogger.hpp>
 #include <assimp/IOSystem.hpp>
+#include <assimp/StringUtils.h>
 
 #include <map>
 
@@ -166,14 +167,14 @@ static aiColor3D ReadColor(StreamReaderLE *stream) {
 }
 
 static void UnknownChunk(StreamReaderLE * /*stream*/, const SIBChunk &chunk) {
-    char temp[5] = {
+    char temp[4] = {
         static_cast<char>((chunk.Tag >> 24) & 0xff),
         static_cast<char>((chunk.Tag >> 16) & 0xff),
         static_cast<char>((chunk.Tag >> 8) & 0xff),
-        static_cast<char>(chunk.Tag & 0xff), '\0'
+        static_cast<char>(chunk.Tag & 0xff)
     };
 
-    ASSIMP_LOG_WARN((Formatter::format(), "SIB: Skipping unknown '", temp, "' chunk."));
+    ASSIMP_LOG_WARN((Formatter::format(), "SIB: Skipping unknown '", ai_str_toprintable(temp, 4), "' chunk."));
 }
 
 // Reads a UTF-16LE string and returns it at UTF-8.