Fix CVE-2016-1867 (Out-of-bounds read in jpc_pi_nextcprl()).

Copied from SUSE.

https://bugzilla.suse.com/show_bug.cgi?id=961886
https://bugzilla.redhat.com/show_bug.cgi?id=1298135

--- jasper-1.900.1/src/libjasper/jpc/jpc_t2cod.c	2007-01-19 22:43:07.000000000 +0100
+++ jasper-1.900.1/src/libjasper/jpc/jpc_t2cod.c	2016-01-14 14:22:24.569056412 +0100
@@ -429,7 +429,7 @@
 	}
 
 	for (pi->compno = pchg->compnostart, pi->picomp =
-	  &pi->picomps[pi->compno]; pi->compno < JAS_CAST(int, pchg->compnoend); ++pi->compno,
+	  &pi->picomps[pi->compno]; pi->compno < JAS_CAST(int, pchg->compnoend) && pi->compno < pi->numcomps; ++pi->compno,
 	  ++pi->picomp) {
 		pirlvl = pi->picomp->pirlvls;
 		pi->xstep = pi->picomp->hsamp * (1 << (pirlvl->prcwidthexpn +
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<tr><td><span title='2021-04-10 14:42:03 +0200'>2021-04-10</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=f91e1046c4050c0947429b9141c80024c261d7b5'>gnu: raptor2: Use HTTPS home page and source URI.</a><span class='msg-avail'>...</span></td><td>Nicolas Goaziou</td></tr>
<tr><td><span title='2021-01-11 23:55:28 +0100'>2021-01-11</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=ca8ac129a40aef6c05e8249ee131ff06c3851098'>gnu: sord: Update to 0.16.8.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2021-01-11 23:55:28 +0100'>2021-01-11</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=103b0ca3a7200664998bb7ef4d583ae18b5ecb57'>gnu: serd: Update to 0.30.8.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-10-02 00:30:43 +0200'>2020-10-02</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=1aa9f2cfde650d9164ea06b3a248a3fc8298271e'>gnu: sord: Update to 0.16.6.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-10-02 00:30:43 +0200'>2020-10-02</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=33214fe4cad0679afaff0a14007af970ebd8f518'>gnu: serd: Update to 0.30.6.</a><span class='msg-avail'>...</span></td><td>Tobias Geerinckx-Rice</td></tr>
<tr><td><span title='2020-08-29 14:26:23 -0400'>2020-08-29</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=4aaa27e4d2d9edbd919a1e87eb8e9c0feb895444'>gnu: Add hdt-cpp.</a><span class='msg-avail'>...</span></td><td>pukkamustard</td></tr>
<tr><td><span title='2020-08-09 15:33:03 +0300'>2020-08-09</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=ab04b2571771f2050fd9e3272bc1079c43e76f3e'>gnu: Add python-cfgraph.</a><span class='msg-avail'>...</span></td><td>Efraim Flashner</td></tr>
<tr><td><span title='2020-07-12 23:08:15 +0200'>2020-07-12</span></td><td><a href='/guix/commit/gnu/packages/rdf.scm?id=b0e7b6992f3f845e83cfbca4d700b51dba50b4d5'>gnu: Remove ".git" from "https://github/…/….git".</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>