Update libjpeg_turbo to 1.4.90 from https://github.com/libjpeg-turbo/

jdcolext.c

Index: jdcolext.c
diff --git a/jdcolext.c b/jdcolext.c
index 6e9e31a937783c0c32b4d81600690eab4d5afaa2..59b676cc4dda4f5581fc881611d46c7abf637852 100644
--- a/jdcolext.c
+++ b/jdcolext.c
@@ -4,8 +4,9 @@
  * This file was part of the Independent JPEG Group's software:
  * Copyright (C) 1991-1997, Thomas G. Lane.
  * libjpeg-turbo Modifications:
- * Copyright (C) 2009, 2011, D. R. Commander.
- * For conditions of distribution and use, see the accompanying README file.
+ * Copyright (C) 2009, 2011, 2015, D. R. Commander.
+ * For conditions of distribution and use, see the accompanying README.ijg
+ * file.
  *
  * This file contains output colorspace conversion routines.
  */
@@ -41,8 +42,8 @@ ycc_rgb_convert_internal (j_decompress_ptr cinfo,
   register JSAMPLE * range_limit = cinfo->sample_range_limit;
   register int * Crrtab = cconvert->Cr_r_tab;
   register int * Cbbtab = cconvert->Cb_b_tab;
-  register INT32 * Crgtab = cconvert->Cr_g_tab;
-  register INT32 * Cbgtab = cconvert->Cb_g_tab;
+  register JLONG * Crgtab = cconvert->Cr_g_tab;
+  register JLONG * Cbgtab = cconvert->Cb_g_tab;
   SHIFT_TEMPS
 
   while (--num_rows >= 0) {
@@ -58,8 +59,8 @@ ycc_rgb_convert_internal (j_decompress_ptr cinfo,
       /* Range-limiting is essential due to noise introduced by DCT losses. */
       outptr[RGB_RED] =   range_limit[y + Crrtab[cr]];
       outptr[RGB_GREEN] = range_limit[y +
-			      ((int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr],
-						 SCALEBITS))];
+                              ((int) RIGHT_SHIFT(Cbgtab[cb] + Crgtab[cr],
+                                                 SCALEBITS))];
       outptr[RGB_BLUE] =  range_limit[y + Cbbtab[cb]];
       /* Set unused byte to 0xFF so it can be interpreted as an opaque */
       /* alpha channel value */