Address PR feedback

Author: ujjwalchadha

src/MSBuild.Abstractions/BaselineProject.cs

@@ -65,8 +65,7 @@ private static string GetCurrentTFM(ImmutableArray<string> globalProperties, Unc
                     $"{MSBuildFacts.TargetFrameworkNodeName} is not set in {nameof(project.FirstConfiguredProject)}");
             }
 
-            // MSBuildHelpers.IsNotNetFramework is pretty much never gonna happen...
-            // but MSBuildHelpers.IsWindows(rawTFM) can happen when coverting a UWP
+            // MSBuildHelpers.IsWindows(rawTFM) can happen when coverting a UWP
             return MSBuildHelpers.IsNotNetFramework(rawTFM) && !MSBuildHelpers.IsWindows(rawTFM) ? StripDecimals(rawTFM) : rawTFM;
 
             static string StripDecimals(string tfm)

src/MSBuild.Abstractions/MSBuildHelpers.cs

@@ -406,19 +406,12 @@ public static bool ArePropertyGroupElementsIdentical(ProjectPropertyGroupElement
         /// <returns>true if string is successfuly unquoted</returns>
         private static bool UnquoteString(ref string s)
         {
-            if (s.Length < 2 || s[0] != '\'' || s[^1] != '\'')
+            if (s.Length < 2 || s[0] != '\'' || s[^1] != '\'' || s[1..^1].Contains('\''))
             {
                 return false;
             }
 
             s = s[1..^1];
-
-            // Make sure there wasn't another string in there
-            if (s.Contains('\''))
-            {
-                return false;
-            }
-
             return true;
         }