Fix crash & add usecase

Author: CodingJellyfish

data/gui/dialogs/ghost_replay_info_dialog.stkgui

@@ -36,7 +36,7 @@
                     </div>
                     <bubble id="info" width="100%" proportion="1" word_wrap="true"/>
                 </div>
-
+                <spacer width="10" height="5%"/>
                 <div width="95%" height="40%" align="center">
                     <buttonbar id="actions" x="0" y="0" height="100%" width="100%" align="center">
                         <icon-button id="back" width="128" height="128"
@@ -53,7 +53,7 @@
                                      I18N="Ghost replay info screen action" text="Start Race" word_wrap="true" />
                     </buttonbar>
                 </div>
-                <spacer width="10" height="10%"/>
+                <spacer width="10" height="5%"/>
             </div>
         </div>
 

data/replay/benchmark_black_forest.replay

@@ -7,6 +7,7 @@ reverse: 0
 difficulty: 3
 mode: time-trial
 track: black_forest
+info: Sped up 2x for benchmarking purpose.
 laps: 1
 min_time: 73.286743
 replay_uid: 564944495606616311

src/replay/replay_play.cpp

@@ -290,7 +290,10 @@ bool ReplayPlay::addReplayFile(const std::string& fn, bool custom_replay, int ca
         if (s[last - 1] == '\n')
             s[last - 1] = '\0';
 
-        rd.m_info = s + 6;
+        rd.m_info = s + 6; 
+        if (rd.m_info.empty())
+            rd.m_info = L" ";
+        
         fgets(s, 1023, fd);
     }
     if (sscanf(s, "laps: %u", &rd.m_laps) != 1)
@@ -368,7 +371,7 @@ void ReplayPlay::loadFile(bool second_replay)
     ReplayData &rd = m_replay_file_list[replay_index];
     unsigned int num_kart = (unsigned int)m_replay_file_list.at(replay_index)
                                                             .m_kart_list.size();
-    unsigned int lines_to_skip = (rd.m_replay_version == 3) ? 7 : 10;
+    unsigned int lines_to_skip = (rd.m_replay_version == 3) ? 7 : 10 + !rd.m_info.empty();
     lines_to_skip += (rd.m_replay_version == 3) ? num_kart : 2*num_kart;
 
     for (unsigned int i = 0; i < lines_to_skip; i++)