[cmake] Quote environment variables for tests
Fix the quoting for the invocation of `playtests.sh`.
diff --git a/build/cmake/tests/CMakeLists.txt b/build/cmake/tests/CMakeLists.txt
index a66040e..9bc9ec4 100644
--- a/build/cmake/tests/CMakeLists.txt
+++ b/build/cmake/tests/CMakeLists.txt
@@ -86,7 +86,7 @@
#
AddTestFlagsOption(ZSTD_PLAYTESTS_FLAGS "--test-large-data"
"Semicolon-separated list of flags to pass to the playTests.sh test")
-add_test(NAME playTests COMMAND sh -c "${TESTS_DIR}/playTests.sh" ${ZSTD_PLAYTESTS_FLAGS})
+add_test(NAME playTests COMMAND sh -c "\"${TESTS_DIR}/playTests.sh\" ${ZSTD_PLAYTESTS_FLAGS}")
if (ZSTD_BUILD_PROGRAMS)
set_property(TEST playTests APPEND PROPERTY ENVIRONMENT
"ZSTD_BIN=$<TARGET_FILE:zstd>"