global: make 'char *path' const where possible

Signed-off-by: Christian Hesse <mail@eworm.de>

ui-atom.h

@@ -1,6 +1,6 @@
 #ifndef UI_ATOM_H
 #define UI_ATOM_H
 
-extern void cgit_print_atom(char *tip, char *path, int max_count);
+extern void cgit_print_atom(char *tip, const char *path, int max_count);
 
 #endif