Return right away if the atom is not an FTYP.

1 files changed, 13 insertions, 13 deletions

diff --git a/src/demuxers/demux_qt.c b/src/demuxers/demux_qt.c
index 402b7be99..3e5faf390 100644
--- a/src/demuxers/demux_qt.c
+++ b/src/demuxers/demux_qt.c
@@ -696,19 +696,19 @@ static int is_qt_file(input_plugin_t *qt_file) {
     if (_X_BE_32(&preview[4]) == MOOV_ATOM)
       return 1;
     else {
-      if (_X_BE_32(&preview[4]) == FTYP_ATOM) {
-        /* show some lenience if the first atom is 'ftyp'; the second atom
-         * could be 'moov' */
-        moov_atom_size = _X_BE_32(&preview[0]);
-        /* compute the size of the current atom plus the preamble of the
-         * next atom; if the size is within the range on the preview buffer
-         * then the next atom's preamble is in the preview buffer */
-        i = moov_atom_size + ATOM_PREAMBLE_SIZE;
-        if (i >= MAX_PREVIEW_SIZE)
-          return 0;
-	return _X_BE_32(&preview[i - 4]) == MOOV_ATOM;
-      } else
-        return 0;
+      if (_X_BE_32(&preview[4]) != FTYP_ATOM)
+	return 0;
+
+      /* show some lenience if the first atom is 'ftyp'; the second atom
+       * could be 'moov' */
+      moov_atom_size = _X_BE_32(&preview[0]);
+      /* compute the size of the current atom plus the preamble of the
+       * next atom; if the size is within the range on the preview buffer
+       * then the next atom's preamble is in the preview buffer */
+      i = moov_atom_size + ATOM_PREAMBLE_SIZE;
+      if (i >= MAX_PREVIEW_SIZE)
+	return 0;
+      return _X_BE_32(&preview[i - 4]) == MOOV_ATOM;
     }
   }