bootchart: check return of fopen before setvbuf in log.c

diff --git a/src/bootchart/log.c b/src/bootchart/log.c
index 89c7b3523c86908dedd82287c06551173bc06fe3..6c40913973ed82f7290740f06f6324d3de49c32f 100644 (file)
--- a/src/bootchart/log.c
+++ b/src/bootchart/log.c
@@ -364,9 +364,9 @@ schedstat_next:
                if (!ps->smaps) {
                        sprintf(filename, "/proc/%d/smaps", pid);
                        ps->smaps = fopen(filename, "r");
-                       setvbuf(ps->smaps, smaps_buf, _IOFBF, sizeof(smaps_buf));
                        if (!ps->smaps)
                                continue;
+                       setvbuf(ps->smaps, smaps_buf, _IOFBF, sizeof(smaps_buf));
                } else {
                        rewind(ps->smaps);
                }