Fix segmentation fault in strhandle()

We cannot pass strescseq.args[0] to atoi when nargs is zero,
because in this case it will be null.

diff --git a/st.c b/st.c
index 5e92db2..f9aba90 100644 (file)
--- a/st.c
+++ b/st.c
@@ -2268,8 +2268,7 @@ strhandle(void) {
 
        term.esc &= ~(ESC_STR_END|ESC_STR);
        strparse();
-       narg = strescseq.narg;
-       par = atoi(strescseq.args[0]);
+       par = (narg = strescseq.narg) ? atoi(strescseq.args[0]) : 0;
 
        switch(strescseq.type) {
        case ']': /* OSC -- Operating System Command */