Fix misspelling of slideshow_duration environment variable

I noticed that echoing `$imv_slideshow_duration` always came up
blank. Turns out, it's misspelled in imv.c. Correcting the spelling
mistake makes it behave as expected.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/imv.c b/src/imv.c
index 0f42371..9dbc7d5 100644
--- a/src/imv.c
+++ b/src/imv.c
@@ -1706,10 +1706,10 @@ static void update_env_vars(struct imv *imv)
   }
 
   snprintf(str, sizeof str, "%f", imv->slideshow.duration);
-  setenv("imv_slidshow_duration", str, 1);
+  setenv("imv_slideshow_duration", str, 1);
 
   snprintf(str, sizeof str, "%f", imv->slideshow.elapsed);
-  setenv("imv_slidshow_elapsed", str, 1);
+  setenv("imv_slideshow_elapsed", str, 1);
 }
 
 static size_t generate_env_text(struct imv *imv, char *buf, size_t buf_len, const char *format)