[rocm-libraries] ROCm/rocm-libraries#399 (commit b9d3dd6)

[hipblas-common][hotfix] don't set
 CPACK_PACKAGING_INSTTALL_PREFIX for windows (#399)

Author: daineAMD

CMakeLists.txt

@@ -67,9 +67,7 @@ if (WIN32)
     set(CPACK_GENERATOR "ZIP")
     set(CPACK_SET_DESTDIR FALSE)
     set(CPACK_INCLUDE_TOPLEVEL_DIRECTORY OFF)
-endif()
-
-if(NOT CPACK_PACKAGING_INSTALL_PREFIX)
+elseif(NOT CPACK_PACKAGING_INSTALL_PREFIX)
     set(CPACK_PACKAGING_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}")
 endif()