fix Invalid read of size 1 error

[jameshilliard]

No description provided.

[jameshilliard]

==10507== Invalid read of size 1
==10507==    at 0x5EB296C: strtok (strtok.S:137)
==10507==    by 0x40A7BB: parse_config (cgminer.c:1933)
==10507==    by 0x40A6C3: load_config (cgminer.c:2049)
==10507==    by 0x459A48: parse_one (parse.c:112)
==10507==    by 0x4594FA: opt_parse (opt.c:213)
==10507==    by 0x406400: main (cgminer.c:9821)
==10507==  Address 0xb6df7da is 10 bytes inside a block of size 11 free'd
==10507==    at 0x4C2BDEC: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10507==    by 0x40A8EB: parse_config (cgminer.c:1986)
==10507==    by 0x40A89A: parse_config (cgminer.c:1963)
==10507==    by 0x40A6C3: load_config (cgminer.c:2049)
==10507==    by 0x459A48: parse_one (parse.c:112)
==10507==    by 0x4594FA: opt_parse (opt.c:213)
==10507==    by 0x406400: main (cgminer.c:9821)
==10507== 
==10507== Invalid read of size 1
==10507==    at 0x5EB299C: strtok (strtok.S:163)
==10507==    by 0x40A7BB: parse_config (cgminer.c:1933)
==10507==    by 0x40A6C3: load_config (cgminer.c:2049)
==10507==    by 0x459A48: parse_one (parse.c:112)
==10507==    by 0x4594FA: opt_parse (opt.c:213)
==10507==    by 0x406400: main (cgminer.c:9821)
==10507==  Address 0xb6df7da is 10 bytes inside a block of size 11 free'd
==10507==    at 0x4C2BDEC: free (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==10507==    by 0x40A8EB: parse_config (cgminer.c:1986)
==10507==    by 0x40A89A: parse_config (cgminer.c:1963)
==10507==    by 0x40A6C3: load_config (cgminer.c:2049)
==10507==    by 0x459A48: parse_one (parse.c:112)
==10507==    by 0x4594FA: opt_parse (opt.c:213)
==10507==    by 0x406400: main (cgminer.c:9821)
==10507==