libtiff: Merge branch 'Fix_Issue#365' into 'master'

https://github.com/libsdl-org/libtiff/commit/0194d4ff51a8259835943d95094584cc16aa5379

From 55514cd8250e88a7791a48b8a52a7a62def97610 Mon Sep 17 00:00:00 2001
From: Su Laus <[EMAIL REDACTED]>
Date: Thu, 10 Feb 2022 20:39:43 +0000
Subject: [PATCH] tiff2pdf: Fixes issues #365, #258 and #257 related to
 initializing 't2p->pdf_compressionquality'.

---
 tools/tiff2pdf.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/tools/tiff2pdf.c b/tools/tiff2pdf.c
index 0bd909fb..e60a2dd0 100644
--- a/tools/tiff2pdf.c
+++ b/tools/tiff2pdf.c
@@ -1822,8 +1822,11 @@ void t2p_read_tiff_data(T2P* t2p, TIFF* input){
 				uint16_t predictor;
 				t2p->pdf_transcode = T2P_TRANSCODE_RAW;
 				t2p->pdf_compression=T2P_COMPRESS_ZIP;
-				TIFFGetField(input, TIFFTAG_PREDICTOR, &predictor);
-				t2p->pdf_compressionquality = predictor;
+				if (TIFFGetField(input, TIFFTAG_PREDICTOR, &predictor)) {
+					t2p->pdf_compressionquality = predictor;
+				} else {
+					t2p->pdf_compressionquality = PREDICTOR_NONE;
+				}
 				/* TIFFTAG_ZIPQUALITY is always Z_DEFAULT_COMPRESSION on reading */
 			}
 		}