perf_counter tools: Fix uninitialized variable in perf-report.c

# make prefix=/usr/local V=1
gcc -o builtin-report.o -c -O2 -ggdb3 -Wall -Werror -Wstrict-prototypes -Wmissing-declarations -Wmissing-prototypes -std=gnu99 -Wdeclaration-after-statement   -DSHA1_HEADER='<openssl/sha.h>'  builtin-report.c
cc1: warnings being treated as errors
builtin-report.c: In function ‘__cmd_report’:
builtin-report.c:626: error: ‘cwdlen’ may be used uninitialized in this function

Signed-off-by: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
LKML-Reference: <new-submission>

1 files changed, 3 insertions, 1 deletions

diff --git a/Documentation/perf_counter/builtin-report.c b/Documentation/perf_counter/builtin-report.c
index 7973092094e1..20a4e519dfd1 100644
--- a/Documentation/perf_counter/builtin-report.c
+++ b/Documentation/perf_counter/builtin-report.c
@@ -653,8 +653,10 @@ static int __cmd_report(void)
                         return EXIT_FAILURE;
                 }
                 cwdlen = strlen(cwd);
-        } else
+        } else {
                 cwdp = NULL;
+                cwdlen = 0;
+        }
 remap:
         buf = (char *)mmap(NULL, page_size * mmap_window, PROT_READ,
                            MAP_SHARED, input, offset);