Try other DefineConst delimiter

Author: ViktorHofer

Directory.Build.props

@@ -64,9 +64,9 @@
     <UseSharedCompilation Condition="'$(DotNetBuildSourceOnly)' == 'true'">false</UseSharedCompilation>
     <DisableImplicitPackageTargetFallback>true</DisableImplicitPackageTargetFallback>
 
-    <DefineConstants Condition="'$(ContinuousIntegrationBuild)' == 'true'">$(DefineConstants);CI_BUILD</DefineConstants>
-    <DefineConstants Condition="'$(OfficialBuilder)' == 'Microsoft'">$(DefineConstants);MICROSOFT_ENABLE_TELEMETRY</DefineConstants>
-    <DefineConstants Condition="'$(DotNetBuildSourceOnly)' == 'true'">$(DefineConstants);DOT_NET_BUILD_FROM_SOURCE</DefineConstants>
+    <DefineConstants Condition="'$(ContinuousIntegrationBuild)' == 'true'">$(DefineConstants),CI_BUILD</DefineConstants>
+    <DefineConstants Condition="'$(OfficialBuilder)' == 'Microsoft'">$(DefineConstants),MICROSOFT_ENABLE_TELEMETRY</DefineConstants>
+    <DefineConstants Condition="'$(DotNetBuildSourceOnly)' == 'true'">$(DefineConstants),DOT_NET_BUILD_FROM_SOURCE</DefineConstants>
 
     <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
     <CentralPackageTransitivePinningEnabled>true</CentralPackageTransitivePinningEnabled>