update error IDs after merge

src/Compilers/CSharp/Portable/Errors/ErrorCode.cs

@@ -1561,13 +1561,13 @@ internal enum ErrorCode
         ERR_RefLocalOrParamExpected = 8373,
         ERR_RefAssignNarrower = 8374,
 
-        ERR_NewBoundWithUnmanaged = 8373,
-        ERR_UnmanagedConstraintMustBeFirst = 8374,
-        ERR_UnmanagedConstraintNotSatisfied = 8375,
-        ERR_UnmanagedConstraintWithLocalFunctions = 8376,
-        ERR_ConWithUnmanagedCon = 8377,
+        ERR_NewBoundWithUnmanaged = 8375,
+        ERR_UnmanagedConstraintMustBeFirst = 8376,
+        ERR_UnmanagedConstraintNotSatisfied = 8377,
+        ERR_UnmanagedConstraintWithLocalFunctions = 8378,
+        ERR_ConWithUnmanagedCon = 8379,
 
-        ERR_UnmanagedBoundWithClass = 8378,
+        ERR_UnmanagedBoundWithClass = 8380,
 
         // Note: you will need to re-generate compiler code after adding warnings (build\scripts\generate-compiler-code.cmd)
     }