graphics/zphoto: unbreak with libc++ 3.9

image.cpp:557:11: error: cannot initialize a variable of type 'char *' with an rvalue of type 'const char *'
    char *suffix1 = strrchr(src,  '.');
          ^         ~~~~~~~~~~~~~~~~~~
image.cpp:558:11: error: cannot initialize a variable of type 'char *' with an rvalue of type 'const char *'
    char *suffix2 = strrchr(dest, '.');
          ^         ~~~~~~~~~~~~~~~~~~
PR:		212343
Reported by:	antoine (via exp-run)

1 files changed, 13 insertions, 0 deletions

diff --git a/graphics/zphoto/files/patch-image.cpp b/graphics/zphoto/files/patch-image.cpp
new file mode 100644
index 000000000000..68e00e71744d
--- /dev/null
+++ b/graphics/zphoto/files/patch-image.cpp
@@ -0,0 +1,13 @@
+--- image.cpp.orig	2004-07-20 16:48:11 UTC
++++ image.cpp
+@@ -554,8 +554,8 @@ restore_mtime (const char *file_name, ti
+ static int
+ convert_needed_p (const char *src, const char *dest)
+ {
+-    char *suffix1 = strrchr(src,  '.');
+-    char *suffix2 = strrchr(dest, '.');
++    const char *suffix1 = strrchr(src,  '.');
++    const char *suffix2 = strrchr(dest, '.');
+ 
+     return strcmp(suffix1, suffix2) != 0;
+ }