Adding case asciiBytes to switches to fix compiler warnings from CMake/Unix.

src/cr2image.cpp

@@ -280,6 +280,7 @@ namespace Exiv2 {
             buf.pData_[0] = 0x4d;
             buf.pData_[1] = 0x4d;
             break;
+        case asciiBytes:
         case invalidByteOrder:
             assert(false);
             break;

src/orfimage.cpp

@@ -277,6 +277,7 @@ namespace Exiv2 {
             buf.pData_[0] = 0x4d;
             buf.pData_[1] = 0x4d;
             break;
+        case asciiBytes:
         case invalidByteOrder:
             assert(false);
             break;

src/tiffvisitor.cpp

@@ -363,6 +363,7 @@ namespace Exiv2 {
         case bigEndian:
             exifData_["Exif.MakerNote.ByteOrder"] = "MM";
             break;
+        case asciiBytes:
         case invalidByteOrder:
             assert(object->byteOrder() != invalidByteOrder);
             break;