Fix more warnings as a result of #14

include/mdbtools.h

@@ -54,7 +54,7 @@
 // Theses 2 atrbutes are not supported by all compilers:
 // M$VC see http://stackoverflow.com/questions/1113409/attribute-constructor-equivalent-in-vc
 #define MDB_DEPRECATED(type, funcname) type __attribute__((deprecated)) funcname
-#define MDB_CONSTRUCTOR(funcname) void __attribute__((constructor)) funcname()
+#define MDB_CONSTRUCTOR(funcname) void __attribute__((constructor)) funcname(void)
 
 enum {
 	MDB_PAGE_DB = 0,

src/libmdb/props.c

@@ -76,7 +76,7 @@ free_names(GPtrArray *names) {
 	g_ptr_array_free(names, TRUE);
 }
 MdbProperties *
-mdb_alloc_props()
+mdb_alloc_props(void)
 {
 	MdbProperties *props;
 

src/util/mdb-tables.c

@@ -44,7 +44,7 @@ struct type_struct {
 };
 
 char *
-valid_types()
+valid_types(void)
 {
 	static char ret[256]; /* be sure to allow for enough space if adding more */
 	int i = 0;