inpcom.c: static declaration of library related global variables

src/frontend/inpcom.c

@@ -37,10 +37,10 @@ Author: 1985 Wayne A. Christopher
 /* globals -- wanted to avoid complicating inp_readall interface */
 static char *library_file[1000];
 static char *library_name[1000][1000];
-struct line *library_ll_ptr[1000][1000];
-struct line *libraries[1000];
-int         num_libraries;
-int         num_lib_names[1000];
+static struct line *library_ll_ptr[1000][1000];
+static struct line *libraries[1000];
+static int  num_libraries;
+static int  num_lib_names[1000];
 static      char *global;
 static char *subckt_w_params[1000];
 static int  num_subckt_w_params;