new compiler warnings

Compiling js_console.cpp
js_console.cpp: In function ‘JSBool js_cond_newline(JSContext*, uintN, jsval*)’:
js_console.cpp:1226:16: warning: unused variable ‘argv’ [-Wunused-variable]
 1226 |         jsval *argv=JS_ARGV(cx, arglist);
      |                ^~~~
js_console.cpp: In function ‘JSBool js_cond_blankline(JSContext*, uintN, jsval*)’:
js_console.cpp:1244:16: warning: unused variable ‘argv’ [-Wunused-variable]
 1244 |         jsval *argv=JS_ARGV(cx, arglist);
      |                ^~~~
js_console.cpp: In function ‘JSBool js_cond_contline(JSContext*, uintN, jsval*)’:
js_console.cpp:1262:16: warning: unused variable ‘argv’ [-Wunused-variable]
 1262 |         jsval *argv=JS_ARGV(cx, arglist);
      |                ^~~~