Fix MemoryOptimizerStrategyLibrary search

Signed-off-by: Finn Williams <finn.williams@arm.com>
Change-Id: I4ca8d9196abd0e116d420a36c780e39edbca0eb3
diff --git a/src/backends/backendsCommon/memoryOptimizerStrategyLibrary/test/CMakeLists.txt b/src/backends/backendsCommon/memoryOptimizerStrategyLibrary/test/CMakeLists.txt
index 3068b60..a82f718 100644
--- a/src/backends/backendsCommon/memoryOptimizerStrategyLibrary/test/CMakeLists.txt
+++ b/src/backends/backendsCommon/memoryOptimizerStrategyLibrary/test/CMakeLists.txt
@@ -7,6 +7,7 @@
             ConstMemoryStrategyTests.cpp
             ValidatorStrategyTests.cpp
             SingleAxisPriorityListTests.cpp
+            MemoryOptimizerStrategyLibraryTests.cpp
 )
 
 add_library(armnnMemoryOptimizationStrategiesUnitTests OBJECT ${armnnMemoryOptimizationStrategiesUnitTests_sources})