Tar fix snprintf usage

Author: JayXon

formats/tar.cpp

@@ -71,11 +71,10 @@ size_t Tar::Leanify(size_t size_leanified /*= 0*/) {
         size_t new_size = LeanifyFile(p_read, original_size, size_leanified, filename);
         if (new_size < original_size) {
           // write new size
-          snprintf(reinterpret_cast<char*>(p_write) + 124, 11, "%011o", (unsigned int)new_size);
+          snprintf(reinterpret_cast<char*>(p_write) + 124, 12, "%011o", (unsigned int)new_size);
 
           // update checksum
-          snprintf(reinterpret_cast<char*>(p_write) + 148, 6, "%06o", CalcChecksum(p_write));
-          p_write[155] = ' ';
+          snprintf(reinterpret_cast<char*>(p_write) + 148, 8, "%07o", CalcChecksum(p_write));
 
           // align to 512
           size_t new_size_aligned = RoundUp(new_size, 512);
@@ -87,8 +86,7 @@ size_t Tar::Leanify(size_t size_leanified /*= 0*/) {
           size_leanified += size_aligned - new_size_aligned;
         } else {
           // update checksum
-          snprintf(reinterpret_cast<char*>(p_write) + 148, 6, "%06o", CalcChecksum(p_write));
-          p_write[155] = ' ';
+          snprintf(reinterpret_cast<char*>(p_write) + 148, 8, "%07o", CalcChecksum(p_write));
 
           // make sure the rest space is all 0
           memset(p_write + new_size + 512, 0, size_aligned - new_size);