test/fuzz: fix the CMake warning

CMake 3.29.0 produces a warning on configuration stage:

NO_WRAP
 | CMake Warning (dev) in cmake/ProtobufMutator.cmake:
 |  A logical block opening on the line
 |    /home/sergeyb/sources/MRG/tarantool/cmake/ProtobufMutator.cmake:38 (if)
 |   closes on the line
 |    /home/sergeyb/sources/MRG/tarantool/cmake/ProtobufMutator.cmake:40 (endif)
 |  with mis-matching arguments.
NO_WRAP

The patch fixes the warning.

NO_CHANGELOG=build
NO_DOC=build
NO_TEST=build

(cherry picked from commit 1e9e70f4c55c74c94922cb0beef44ae2b82255a9)

cmake/ProtobufMutator.cmake

@@ -37,7 +37,7 @@ include_directories(${PROTOBUF_INCLUDE_DIRS})
 set(PROTOBUF_LIBRARIES protobuf)
 if(${CMAKE_BUILD_TYPE} STREQUAL "Debug")
   set(PROTOBUF_LIBRARIES protobufd)
-endif(CMAKE_BUILD_TYPE)
+endif()
 
 foreach(lib ${PROTOBUF_LIBRARIES})
   set(LIB_PROTOBUF_PATH ${PROTOBUF_INSTALL_DIR}/lib/lib${lib}.a)