Ensure that image_width and image_height are initialized if libjpeg v…

…8 emulation is enabled.

git-svn-id: svn+ssh://svn.code.sf.net/p/libjpeg-turbo/code/branches/1.1.x@565 632fc199-4ca6-4c93-a231-07263d6284db

ChangeLog.txt

@@ -19,6 +19,11 @@ libjpeg-turbo with older versions of MinGW64, you will now have to add
 [4] Fixed a regression bug in the NSIS script that caused the Windows installer
 build to fail when using the Visual Studio IDE.
 
+[5] Fixed a bug in jpeg_read_coefficients() whereby it would not initialize
+cinfo->image_width and cinfo->image_height if libjpeg v8 emulation was enabled.
+This specifically caused the jpegoptim program to fail if it was linked against
+a version of libjpeg-turbo that was built with libjpeg v8 emulation.
+
 
 1.1.0
 =====

jdtrans.c

@@ -99,6 +99,11 @@ transdecode_master_selection (j_decompress_ptr cinfo)
   /* This is effectively a buffered-image operation. */
   cinfo->buffered_image = TRUE;
 
+#if JPEG_LIB_VERSION >= 80
+  /* Compute output image dimensions and related values. */
+  jpeg_core_output_dimensions(cinfo);
+#endif
+
   /* Entropy decoding: either Huffman or arithmetic coding. */
   if (cinfo->arith_code) {
 #ifdef D_ARITH_CODING_SUPPORTED