fix msbuild path

Author: SimonCropp

src/NServiceBus.RabbitMQ.AcceptanceTests/NServiceBus.RabbitMQ.AcceptanceTests.csproj

@@ -11,6 +11,7 @@
     <AssemblyName>NServiceBus.RabbitMQ.AcceptanceTests</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\</SolutionDir>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>

src/NServiceBus.RabbitMQ.Tests/NServiceBus.RabbitMQ.Tests.csproj

@@ -12,6 +12,7 @@
     <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
     <RestorePackages>true</RestorePackages>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\</SolutionDir>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>

src/NServiceBus.RabbitMQ/NServiceBus.RabbitMQ.csproj

@@ -14,6 +14,7 @@
     <SignAssembly>true</SignAssembly>
     <AssemblyOriginatorKeyFile>..\..\NServiceBus.snk</AssemblyOriginatorKeyFile>
     <FodyPath>..\packages\Fody</FodyPath>
+    <SolutionDir Condition="$(SolutionDir) == '' Or $(SolutionDir) == '*Undefined*'">..\</SolutionDir>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <DebugSymbols>true</DebugSymbols>