Avoid \n in error messages.

src/input/decoder.c

@@ -659,7 +659,7 @@ static int DecoderGetDisplayRate( decoder_t *p_dec )
 /* */
 static void DecoderUnsupportedCodec( decoder_t *p_dec, vlc_fourcc_t codec )
 {
-    msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
+    msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'. "
              "VLC probably does not support this sound or video format.",
              (char*)&codec );
     dialog_Fatal( p_dec, _("No suitable decoder module"),

src/misc/image.c

@@ -667,7 +667,7 @@ static decoder_t *CreateDecoder( vlc_object_t *p_this, video_format_t *fmt )
     p_dec->p_module = module_need( p_dec, "decoder", "$codec", false );
     if( !p_dec->p_module )
     {
-        msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'.\n"
+        msg_Err( p_dec, "no suitable decoder module for fourcc `%4.4s'. "
                  "VLC probably does not support this image format.",
                  (char*)&p_dec->fmt_in.i_codec );