[gimp/gimp-2-10] Issue #4618: support Canon CR3.

[Jehan <jehanp src gnome org>]

commit cb4f0de0667374269b393c0463245bfd0da8e40d
Author: Jehan <jehan girinstud io>
Date:   Sat Mar 14 23:54:25 2020 +0100

    Issue #4618: support Canon CR3.
    
    And by "supporting CR3", I mean sending the file over to raw developer
    software which are supposed to support it! At the very least RawTherapee
    support CR3 (since recent version 5.8 apparently), not sure about
    darktable (but if not yet, I assume it won't be long either).
    
    (cherry picked from commit 3a0af1f50afc7507f813a53992b1dfe84c89a07d)

 plug-ins/file-raw/file-raw-formats.h | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/plug-ins/file-raw/file-raw-formats.h b/plug-ins/file-raw/file-raw-formats.h
index f3eb275c29..672bb0092b 100644
--- a/plug-ins/file-raw/file-raw-formats.h
+++ b/plug-ins/file-raw/file-raw-formats.h
@@ -44,10 +44,11 @@ static const FileFormat file_formats[] =
 {
   {
     N_("Raw Canon"),
-    "image/x-canon-cr2,image/x-canon-crw",
-    "cr2,crw",
+    "image/x-canon-cr2,image/x-canon-crw,image/x-canon-cr3",
+    "cr2,crw,cr3",
     "0,string,II*\\0\\020\\0\\0\\0CR,"   /* cr2  */
-    "0,string,II\\024\\0\\0\\0HEAPCCDR", /* crw  */
+    "0,string,II\\024\\0\\0\\0HEAPCCDR," /* crw  */
+    "4,string,ftypcrx ",                 /* cr3  */
 
     "file-%s-canon-load",
     "Load files in the Canon raw formats via %s",