failure to detect gif with jpg extension

[DonMoir]

ffmpeg -i Icarus_Records_7a9f.jpg temp.gif
ffmpeg version N-65916-g9e8ab36 Copyright (c) 2000-2014 the FFmpeg developers

built on Aug 26 2014 22:06:48 with gcc 4.8.3 (GCC)
configuration: --disable-static --enable-shared --enable-gpl --enable-version3

--disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --ena

ble-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --e
nable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-lib
gsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencor
e-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enabl
e-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-l
ibtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-
libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-l
ibwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --ena
ble-decklink --enable-zlib

libavutil 54. 7.100 / 54. 7.100
libavcodec 56. 0.101 / 56. 0.101
libavformat 56. 3.100 / 56. 3.100
libavdevice 56. 0.100 / 56. 0.100
libavfilter 5. 0.103 / 5. 0.103
libswscale 3. 0.100 / 3. 0.100
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 0.100 / 53. 0.100

[mjpeg @ 0003b760] No JPEG data found in image
[image2 @ 0003f960] decoding for stream 0 failed
[image2 @ 0003f960] Could not find codec parameters for stream 0 (Video: mjpeg):

unspecified size

Consider increasing the value for the 'analyzeduration' and 'probesize' options
Icarus_Records_7a9f.jpg: could not find codec parameters
Input #0, image2, from 'Icarus_Records_7a9f.jpg':

Duration: 00:00:00.04, start: 0.000000, bitrate: N/A

Stream #0:0: Video: mjpeg, 25 tbr, 25 tbn, 25 tbc

Output #0, gif, to 'temp.gif':
Output file #0 does not contain any stream

[DonMoir]

The file is a gif given to me by end user

[Michael Niedermayer]

Fixed in b3fd2b175c90b4766034095e74e1f5112b1547ef