expat: remove obsolete patch.

srcpkgs/expat/patches/xmlparse.patch

@@ -1,75 +0,0 @@
-See https://hg.mozilla.org/releases/mozilla-esr31/rev/2f3e78643f5c
-Patch to fix CVE-2015-1283
-
---- lib/xmlparse.c
-+++ lib/xmlparse.c
-@@ -1646,29 +1646,40 @@ XML_ParseBuffer(XML_Parser parser, int l
-   XmlUpdatePosition(encoding, positionPtr, bufferPtr, &position);
-   positionPtr = bufferPtr;
-   return result;
- }
- 
- void * XMLCALL
- XML_GetBuffer(XML_Parser parser, int len)
- {
-+/* BEGIN MOZILLA CHANGE (sanity check len) */
-+  if (len < 0) {
-+    errorCode = XML_ERROR_NO_MEMORY;
-+    return NULL;
-+  }
-+/* END MOZILLA CHANGE */
-   switch (ps_parsing) {
-   case XML_SUSPENDED:
-     errorCode = XML_ERROR_SUSPENDED;
-     return NULL;
-   case XML_FINISHED:
-     errorCode = XML_ERROR_FINISHED;
-     return NULL;
-   default: ;
-   }
- 
-   if (len > bufferLim - bufferEnd) {
--    /* FIXME avoid integer overflow */
-     int neededSize = len + (int)(bufferEnd - bufferPtr);
-+/* BEGIN MOZILLA CHANGE (sanity check neededSize) */
-+    if (neededSize < 0) {
-+      errorCode = XML_ERROR_NO_MEMORY;
-+      return NULL;
-+    }
-+/* END MOZILLA CHANGE */
- #ifdef XML_CONTEXT_BYTES
-     int keep = (int)(bufferPtr - buffer);
- 
-     if (keep > XML_CONTEXT_BYTES)
-       keep = XML_CONTEXT_BYTES;
-     neededSize += keep;
- #endif  /* defined XML_CONTEXT_BYTES */
-     if (neededSize  <= bufferLim - buffer) {
-@@ -1687,17 +1698,25 @@ XML_GetBuffer(XML_Parser parser, int len
-     }
-     else {
-       char *newBuf;
-       int bufferSize = (int)(bufferLim - bufferPtr);
-       if (bufferSize == 0)
-         bufferSize = INIT_BUFFER_SIZE;
-       do {
-         bufferSize *= 2;
--      } while (bufferSize < neededSize);
-+/* BEGIN MOZILLA CHANGE (prevent infinite loop on overflow) */
-+      } while (bufferSize < neededSize && bufferSize > 0);
-+/* END MOZILLA CHANGE */
-+/* BEGIN MOZILLA CHANGE (sanity check bufferSize) */
-+      if (bufferSize <= 0) {
-+        errorCode = XML_ERROR_NO_MEMORY;
-+        return NULL;
-+      }
-+/* END MOZILLA CHANGE */
-       newBuf = (char *)MALLOC(bufferSize);
-       if (newBuf == 0) {
-         errorCode = XML_ERROR_NO_MEMORY;
-         return NULL;
-       }
-       bufferLim = newBuf + bufferSize;
- #ifdef XML_CONTEXT_BYTES
-       if (bufferPtr) {
-