Fix(CMake): Correct misspelled variable in condition check

Author: xorespesp

config/ConfigureChecks.cmake

@@ -913,7 +913,7 @@ if (${HDF_PREFIX}_HAVE_COMPLEX_H)
     HDF_CHECK_TYPE_SIZE ("_Lcomplex" ${HDF_PREFIX}_SIZEOF__LCOMPLEX)
     cmake_pop_check_state ()
     if (${HDF_PREFIX}_SIZEOF__FCOMPLEX AND ${HDF_PREFIX}_SIZEOF__DCOMPLEX AND
-        ${HDF_PREFIX}_SIZEOF__FCOMPLEX)
+        ${HDF_PREFIX}_SIZEOF__LCOMPLEX)
       set (${HDF_PREFIX}_SIZEOF_FLOAT_COMPLEX ${${HDF_PREFIX}_SIZEOF__FCOMPLEX}
            CACHE INTERNAL "SizeOf for float _Complex" FORCE)
       set (${HDF_PREFIX}_SIZEOF_DOUBLE_COMPLEX ${${HDF_PREFIX}_SIZEOF__DCOMPLEX}