No need for error-reporting in TclpLoadMemory(): If it fails, a fallb… #4656

Job	Run time
gcc	3m 29s
gcc (CFLAGS=-DTCL_NO_DEPRECATED=1)	3m 19s
gcc (--disable-shared)	3m 33s
gcc (--disable-zipfs)	3m 31s
gcc (--enable-symbols)	3m 34s
gcc (--enable-symbols=mem)	5m 18s
gcc (--enable-symbols=all)	6m 21s
gcc (CFLAGS=-ftrapv)	3m 34s
gcc (CFLAGS=-m32 CPPFLAGS=-m32 LDFLAGS=-m32 --disable-64bit)	3m 40s
	36m 19s

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