openjpeg: Prevent a buffer overflow in opj_j2k_read_SPCod_SPCoc.

third_party/libopenjpeg20/0015-read_SPCod_SPCoc_overflow.patch

Index: third_party/libopenjpeg20/0015-read_SPCod_SPCoc_overflow.patch
diff --git a/third_party/libopenjpeg20/0015-read_SPCod_SPCoc_overflow.patch b/third_party/libopenjpeg20/0015-read_SPCod_SPCoc_overflow.patch
new file mode 100644
index 0000000000000000000000000000000000000000..56f0cf0e8e0c0fdfc2de389b66f0b7e2f58cf431
--- /dev/null
+++ b/third_party/libopenjpeg20/0015-read_SPCod_SPCoc_overflow.patch
@@ -0,0 +1,15 @@
+diff --git a/third_party/libopenjpeg20/j2k.c b/third_party/libopenjpeg20/j2k.c
+index 9056feb..c7aa8db 100644
+--- a/third_party/libopenjpeg20/j2k.c
++++ b/third_party/libopenjpeg20/j2k.c
+@@ -8744,7 +8744,9 @@ static OPJ_BOOL opj_j2k_read_SPCod_SPCoc(  opj_j2k_t *p_j2k,
+                                 p_j2k->m_specific_param.m_decoder.m_default_tcp;
+ 
+         /* precondition again */
+-        assert(compno < p_j2k->m_private_image->numcomps);
++        if (compno >= p_j2k->m_private_image->numcomps) {
++                return OPJ_FALSE;
++        }
+ 
+         l_tccp = &l_tcp->tccps[compno];
+         l_current_ptr = p_header_data;