#60823 UnicodeToGBK and UnicodeToGB2312 converter don't work on SPARC Solaris

r = nhotta, sr=erik
the original code does not work with big-endian system.

intl/uconv/ucvcn/nsUnicodeToGB2312V2.cpp

@@ -118,8 +118,7 @@ NS_IMETHODIMP nsUnicodeToGB2312V2::ConvertNoBuff(const PRUnichar * aSrc,
 		else
       {
         // this is an ASCII
-        pSrcDBCode = (DByte *)pSrc;
-        *aDest = pSrcDBCode->leftbyte;
+        *aDest = (char)*pSrc;
         aDest++; // increment 1 byte
         iDestLength +=1;
       }

intl/uconv/ucvcn/nsUnicodeToGBK.cpp

@@ -131,8 +131,7 @@ NS_IMETHODIMP nsUnicodeToGBK::ConvertNoBuff(const PRUnichar * aSrc,
        else
          {
            // this is an ASCII
-           pSrcDBCode = (DByte *)pSrc;
-           *aDest = pSrcDBCode->leftbyte;
+           *aDest = (char)*pSrc;
            aDest++; // increment 1 byte
            iDestLength +=1;
          }