mshtml: Implement HTMLCurrentStyle_get_borderLeftWidth.

dlls/mshtml/htmlcurstyle.c

@@ -300,8 +300,8 @@ static HRESULT WINAPI HTMLCurrentStyle_get_borderBottomWidth(IHTMLCurrentStyle *
 static HRESULT WINAPI HTMLCurrentStyle_get_borderLeftWidth(IHTMLCurrentStyle *iface, VARIANT *p)
 {
     HTMLCurrentStyle *This = HTMLCURSTYLE_THIS(iface);
-    FIXME("(%p)->(%p)\n", This, p);
-    return E_NOTIMPL;
+    TRACE("(%p)->(%p)\n", This, p);
+    return get_nsstyle_attr_var(This->nsstyle, STYLEID_BORDER_LEFT_WIDTH, p, 0);
 }
 
 static HRESULT WINAPI HTMLCurrentStyle_get_left(IHTMLCurrentStyle *iface, VARIANT *p)

dlls/mshtml/tests/dom.c

@@ -2616,6 +2616,11 @@ static void test_current_style(IHTMLCurrentStyle *current_style)
     ok(hres == S_OK, "get_marginLeft failed: %08x\n", hres);
     ok(V_VT(&v) == VT_BSTR, "V_VT(v) = %d\n", V_VT(&v));
     VariantClear(&v);
+
+    hres = IHTMLCurrentStyle_get_borderLeftWidth(current_style, &v);
+    ok(hres == S_OK, "get_borderLeftWidth failed: %08x\n", hres);
+    ok(V_VT(&v) == VT_BSTR, "V_VT(v) = %d\n", V_VT(&v));
+    VariantClear(&v);
 }
 
 static void test_style2(IHTMLStyle2 *style2)