diff -uNr htop-2.0.2/StringUtils.c htop-2.0.2.mod/StringUtils.c
--- htop-2.0.2/StringUtils.c	2016-06-20 18:11:13.000000000 +0300
+++ htop-2.0.2.mod/StringUtils.c	2017-09-26 13:33:10.596064441 +0300
@@ -88,6 +88,10 @@
 }
 
 void String_freeArray(char** s) {
+   if (!s) {
+      return;
+   }
+
    for (int i = 0; s[i] != NULL; i++) {
       free(s[i]);
    }