skip_whitespace() shouldn't claim its return value is const, it doesn't know
that and callers wind up typecasting it back.
diff --git a/include/libbb.h b/include/libbb.h
index 5877a4a..e9d7e75 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -200,7 +200,7 @@
extern void chomp(char *s);
extern void trim(char *s);
-extern const char *bb_skip_whitespace(const char *);
+extern char *skip_whitespace(const char *);
extern struct BB_applet *find_applet_by_name(const char *name);
void run_applet_by_name(const char *name, int argc, char **argv);