Use malloc() instead of alloca() so that we can use insanely long lines

in the web interface stuff to "unwrap" messages.

src/sbbs3/js_global.c

@@ -830,12 +830,14 @@ js_word_wrap(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 	if(argc>3 && JSVAL_IS_BOOLEAN(argv[3]))
 		handle_quotes=JSVAL_TO_BOOLEAN(argv[3]);
 
-	if((linebuf=(char*)alloca((len*2)+2))==NULL) /* room for ^A codes ToDo: This isn't actually "enough" room */
+	if((linebuf=(char*)malloc((len*2)+2))==NULL) /* room for ^A codes ToDo: This isn't actually "enough" room */
 		return(JS_FALSE);
 
 	if(handle_quotes) {
-		if((prefix=(char *)alloca((len*2)+2))==NULL) /* room for ^A codes ToDo: This isn't actually "enough" room */
+		if((prefix=(char *)malloc((len*2)+2))==NULL) { /* room for ^A codes ToDo: This isn't actually "enough" room */
+			free(linebuf);
 			return(JS_FALSE);
+		}
 		prefix[0]=0;
 	}
 
@@ -1041,6 +1043,8 @@ js_word_wrap(JSContext *cx, JSObject *obj, uintN argc, jsval *argv, jsval *rval)
 
 	js_str = JS_NewStringCopyZ(cx, outbuf);
 	free(outbuf);
+	free(linebuf);
+	free(prefix);
 	if(js_str==NULL)
 		return(JS_FALSE);