cpuinfo_x86_init_processor - ‘brand_string’ of size 48 warning

[fbarchard]

In this PR #320
the size of CPUINFO_PACKAGE_NAME_MAX was increased from 48 to 64
But the linux x86 build shows some fields were not updated

[ 20%] Building C object CMakeFiles/cpuinfo.dir/src/x86/init.c.o
/usr/local/google/home/usr/git/cpuinfo/src/x86/init.c: In function ‘cpuinfo_x86_init_processor’:
/usr/local/google/home/usr/git/cpuinfo/src/x86/init.c:75:17: warning: ‘memcpy’ reading 64 bytes from a region of size 48 [-Wstringop-overread]
75 | memcpy(processor->brand_string, brand_string, sizeof(processor->brand_string));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/local/google/home/usr/git/cpuinfo/src/x86/init.c:71:35: note: source object ‘brand_string’ of size 48
71 | struct cpuid_regs brand_string[3];
| ^~~~~~~~~~~~
[ 25%] Building C object CMakeFiles/cpuinfo.dir/src/x86/info.c.o