[Security] fr-process: avoid 'strcpy' and 'strcat'

Use 'g_strlcpy' instead of 'strcpy', and 'g_strlcat' instead of 'strcat'

Fixes Clang static analyzer warnings:

fr-process.c:696:5: warning: Call to function 'strcpy' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcpy'. CWE-119
                                strcpy(rarfile, argv[2]);
                                ^~~~~~

fr-process.c:698:5: warning: Call to function 'strcat' is insecure as it does not provide bounding of the memory buffer. Replace unbounded copy functions with analogous functions that support length arguments such as 'strlcat'. CWE-119
                                strcat(rarfile, "part1.rar");
                                ^~~~~~

fr-process.c:705:32: warning: Out of bound memory access (accessed memory precedes memory block)
                                        rarfile[strlen(rarfile)-5]=0;
                                        ~~~~~~~~~~~~~~~~~~~~~~~~~~^~

0 files changed, 0 insertions, 0 deletions