fix __builtin_strncpy truncated compilation error

error: ‘__builtin_strncpy’ output may be truncated copying 4095 bytes
from a string of length 4095 [-Werror=stringop-truncation]

Author: lplewa

src/provider/provider_devdax_memory.c

@@ -417,7 +417,7 @@ static umf_result_t devdax_get_ipc_handle(void *provider, const void *ptr,
         (devdax_memory_provider_t *)provider;
 
     devdax_ipc_data_t *devdax_ipc_data = (devdax_ipc_data_t *)providerIpcData;
-    strncpy(devdax_ipc_data->path, devdax_provider->path, PATH_MAX - 1);
+    strncpy(devdax_ipc_data->path, devdax_provider->path, PATH_MAX);
     devdax_ipc_data->path[PATH_MAX - 1] = '\0';
     devdax_ipc_data->protection = devdax_provider->protection;
     devdax_ipc_data->offset =

src/provider/provider_file_memory.c

@@ -745,7 +745,7 @@ static umf_result_t file_get_ipc_handle(void *provider, const void *ptr,
     file_ipc_data_t *file_ipc_data = (file_ipc_data_t *)providerIpcData;
     file_ipc_data->offset_fd = (size_t)value - 1;
     file_ipc_data->size = size;
-    strncpy(file_ipc_data->path, file_provider->path, PATH_MAX - 1);
+    strncpy(file_ipc_data->path, file_provider->path, PATH_MAX);
     file_ipc_data->path[PATH_MAX - 1] = '\0';
     file_ipc_data->protection = file_provider->protection;
     file_ipc_data->visibility = file_provider->visibility;