Merge pull request #18 from unoplatform/mergify/bp/release/stable/1.1…

…/pr-17

fix: Skip empty version property (backport #17)

src/NvGet/Extensions/XmlDocumentExtensions.cs

@@ -111,9 +111,12 @@ public static PackageIdentity[] GetPackageReferences(this XmlDocument document)
 
 				var packageName = string.Concat(nameParts).ToLowerInvariant();
 
-				if(NuGetVersion.TryParse(versionProperty.InnerText, out var nugetVersion))
+				if(!string.IsNullOrWhiteSpace(packageName))
 				{
-					references.Add(CreatePackageIdentity(packageName, versionProperty.InnerText));
+					if(NuGetVersion.TryParse(versionProperty.InnerText, out var nugetVersion))
+					{
+						references.Add(CreatePackageIdentity(packageName, versionProperty.InnerText));
+					}
 				}
 			}