Make build shut up about system() without return value check.

    st.c:1321:2: warning: ignoring return value of function declared with warn_unused_result attribute [-Wunused-result]
            system(cmd);
            ^~~~~~ ~~~

Debatable whether an error here should case exit(EXIT_FAILURE). Just
preserving the existing behaviour for now.

1 files changed, 2 insertions, 1 deletions

diff --git a/st.c b/st.c
index 8e51344..b042be2 100644
--- a/st.c
+++ b/st.c
@@ -1276,7 +1276,8 @@ stty(void)
                 siz-= n + 1;
         }
         *q = '\0';
-        system(cmd);
+        if (system(cmd) != 0)
+            perror("Couldn't call stty");
 }
 
 void