Make ShortVersionParser.TryParseMajorMinor fail for unstable versions

Author: nulltoken

GitFlowVersion/ShortVersionParser.cs

@@ -16,7 +16,10 @@ public static bool TryParseMajorMinor(string versionString, out int major, out i
         {
             int patch;
 
-            TryParse(versionString, out major, out minor, out patch);
+            if (!TryParse(versionString, out major, out minor, out patch))
+            {
+                return false;
+            }
 
             // Note: during scanning of master we only want the last major / minor, not the patch, so patch must be zero
             return patch == 0;

Tests/ShortVersionParserTests.cs

@@ -52,6 +52,9 @@ public void Major_minorTry()
         var result = ShortVersionParser.TryParseMajorMinor("1.2.3", out major, out minor);
         Assert.IsFalse(result);
 
+        result = ShortVersionParser.TryParseMajorMinor("1.2.0-alpha1", out major, out minor);
+        Assert.IsFalse(result);
+
         result = ShortVersionParser.TryParseMajorMinor("1.2", out major, out minor);
         Assert.IsTrue(result);