wscript: move werror flags into uselib

utils/run-fuzzer/wscript

@@ -18,14 +18,13 @@ def configure(conf):
 def add_runner_target(bld, lib, func):
 	source = bld.path.ant_glob('*.c')
 	includes = '.'
-	libs = [ 'DL' ]
 
 	bld(
 		source   = source,
 		target   = 'run-fuzzer-' + func,
 		features = 'c cprogram',
 		includes = includes,
-		use      = libs,
+		use      = 'DL werror',
 		defines  = ['FUNC="Fuzz_' + func + '"', 'LIB="' + lib + '"'],
 		install_path = bld.env.BINDIR,
 		subsystem = bld.env.CONSOLE_SUBSYSTEM