modpost: Use for() loop

Slight cleanup by using a for() loop instead of while(). This makes it
clearer what is the iteration and what is the actual work done.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

Author: Peter Zijlstra

scripts/mod/modpost.c

@@ -1595,12 +1595,10 @@ static void read_symbols(const char *modname)
 			license = get_next_modinfo(&info, "license", license);
 		}
 
-		namespace = get_modinfo(&info, "import_ns");
-		while (namespace) {
+		for (namespace = get_modinfo(&info, "import_ns");
+		     namespace;
+		     namespace = get_next_modinfo(&info, "import_ns", namespace))
 			add_namespace(&mod->imported_namespaces, namespace);
-			namespace = get_next_modinfo(&info, "import_ns",
-						     namespace);
-		}
 
 		if (!get_modinfo(&info, "description"))
 			warn("missing MODULE_DESCRIPTION() in %s\n", modname);