[PATCH] tools/bpftool: Fix uninitialized error

[Matthew Kenigsberg]

Static analyzer showed following the code path at
tools/bpf/bpftool/main.c:308 leads to returning err when uninitialized
                if (n_argc < 0)
                        goto err_close;

Initializing err to -1 fixes the uninitialized return and prevents
having to add a 3rd err = -1 line.

Signed-off-by: Matthew Kenigsberg <mken...@redhat.com>
---
 tools/bpf/bpftool/main.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/tools/bpf/bpftool/main.c b/tools/bpf/bpftool/main.c
index 4a191fcbeb82..a60164fe2b72 100644
--- a/tools/bpf/bpftool/main.c
+++ b/tools/bpf/bpftool/main.c
@@ -245,7 +245,7 @@ static int do_batch(int argc, char **argv)
        int n_argc;
        FILE *fp;
        char *cp;
-       int err;
+       int err = -1;
        int i;
 
        if (argc < 2) {
@@ -289,7 +289,6 @@ static int do_batch(int argc, char **argv)
                            strlen(contline) == 0) {
                                p_err("missing continuation line on command %d",
                                      lines);
-                               err = -1;
                                goto err_close;
                        }
 
@@ -299,7 +298,6 @@ static int do_batch(int argc, char **argv)
 
                        if (strlen(buf) + strlen(contline) + 1 > sizeof(buf)) {
                                p_err("command %d is too long", lines);
-                               err = -1;
                                goto err_close;
                        }
                        buf[strlen(buf) - 2] = '\0';
-- 
2.18.1