libtiff: Merge branch 'TIFFField_downgrade_errors_to_warnings' into 'master'

SDL Commits
1 
From a693d1f365b85f20ce84182606990683a9b73dd6 Mon Sep 17 00:00:00 2001
From: Su_Laus <[EMAIL REDACTED]>
Date: Sun, 28 May 2023 21:05:49 +0200
Subject: [PATCH] TIFFFieldWithName() and TIFFFieldWithTag() downgrade errors
 to warnings. see
 https://gitlab.com/libtiff/libtiff/-/issues/575#note_1407633888

---
 libtiff/tif_dirinfo.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/libtiff/tif_dirinfo.c b/libtiff/tif_dirinfo.c
index 9ab0b2f4..d7bf2cff 100644
--- a/libtiff/tif_dirinfo.c
+++ b/libtiff/tif_dirinfo.c
@@ -842,8 +842,8 @@ const TIFFField *TIFFFieldWithTag(TIFF *tif, uint32_t tag)
     const TIFFField *fip = TIFFFindField(tif, tag, TIFF_ANY);
     if (!fip)
     {
-        TIFFErrorExtR(tif, "TIFFFieldWithTag",
-                      "Internal error, unknown tag 0x%x", (unsigned int)tag);
+        TIFFWarningExtR(tif, "TIFFFieldWithTag", "Warning, unknown tag 0x%x",
+                        (unsigned int)tag);
     }
     return (fip);
 }
@@ -853,8 +853,8 @@ const TIFFField *TIFFFieldWithName(TIFF *tif, const char *field_name)
     const TIFFField *fip = _TIFFFindFieldByName(tif, field_name, TIFF_ANY);
     if (!fip)
     {
-        TIFFErrorExtR(tif, "TIFFFieldWithName",
-                      "Internal error, unknown tag %s", field_name);
+        TIFFWarningExtR(tif, "TIFFFieldWithName", "Warning, unknown tag %s",
+                        field_name);
     }
     return (fip);
 }