Update nusoap.php

Adjust on wsdl imports. I don't know if "// TODO: handle imports more properly, grabbing them in-line and nesting them" has saned

src/nusoap.php

@@ -4855,12 +4855,12 @@ function fetchWSDL($wsdl)
             $imported = 0;
             // Schema imports
             foreach ($this->schemas as $ns => $list) {
-                foreach ($list as $xs) {
+                foreach ($list as $xsKey => $xs) {
                     $wsdlparts = parse_url($this->wsdl);    // this is bogusly simple!
                     foreach ($xs->imports as $ns2 => $list2) {
                         for ($ii = 0; $ii < count($list2); $ii++) {
                             if (array_key_exists($ii, $list2) && (!isset($list2[$ii]['loaded']) || !$list2[$ii]['loaded'])) {
-                                $this->schemas[$ns][$ns2]->imports[$ns2][$ii]['loaded'] = true;
+                                @$this->schemas[$ns][$xsKey]->imports[$ns2][$ii]['loaded'] = true;
                                 $url = $list2[$ii]['location'];
                                 if ($url != '') {
                                     $urlparts = parse_url($url);