Bump up version number to 0.3.2; LT revision to 2:2:0

Doing inflation after error produces invalid results, especially, if
it is in NGHTTP2_HD_STATE_READ_INDEX, the inflater->left could be 0,
which causes assertion error.  Add sanity assertion for index

configure.ac

@@ -21,13 +21,13 @@ dnl LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 dnl OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 dnl WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 AC_PREREQ(2.61)
-AC_INIT([nghttp2], [0.3.1], [t-tujikawa@users.sourceforge.net])
+AC_INIT([nghttp2], [0.3.2], [t-tujikawa@users.sourceforge.net])
 LT_PREREQ([2.2.6])
 LT_INIT()
 dnl See versioning rule:
 dnl  http://www.gnu.org/software/libtool/manual/html_node/Updating-version-info.html
 AC_SUBST(LT_CURRENT, 2)
-AC_SUBST(LT_REVISION, 1)
+AC_SUBST(LT_REVISION, 2)
 AC_SUBST(LT_AGE, 0)
 
 major=`echo $PACKAGE_VERSION |cut -d. -f1 | sed -e "s/[^0-9]//g"`

lib/nghttp2_hd.c

@@ -531,10 +531,10 @@ static  uint8_t* decode_length(ssize_t *res, int *final, ssize_t initial,
       *final = 1;
       return in + 1;
     }
-  }
-  if(++in == last) {
-    *res = n;
-    return in;
+    if(++in == last) {
+      *res = n;
+      return in;
+    }
   }
   for(r = 0; in != last; ++in, r += 7) {
     n += (*in & 0x7f) << r;
@@ -1412,6 +1412,10 @@ ssize_t nghttp2_hd_inflate_hd(nghttp2_hd_inflater *inflater,
   uint8_t *last = in + inlen;
   int rfin = 0;
 
+  if(inflater->ctx.bad) {
+    return NGHTTP2_ERR_HEADER_COMP;
+  }
+
   DEBUGF(fprintf(stderr, "nghtp2_hd_infalte_hd start state=%d\n",
                  inflater->state));
   hd_inflate_keep_free(inflater);
@@ -1477,6 +1481,7 @@ ssize_t nghttp2_hd_inflate_hd(nghttp2_hd_inflater *inflater,
         }
       } else {
         inflater->index = inflater->left;
+        assert(inflater->index > 0);
         --inflater->index;
         inflater->ent_name = nghttp2_hd_table_get(&inflater->ctx,
                                                   inflater->index);