PERF: Don't init perf if not fuzzing with perf feedback enabled

Also remove some redundant extern from util function
implementations.

Signed-off-by: Anestis Bechtsoudis <anestis@census-labs.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/files.c b/files.c
index 15fba992..1fcb13d0 100644
--- a/files.c
+++ b/files.c
@@ -109,10 +109,7 @@ size_t files_readFromFd(int fd, uint8_t * buf, size_t fileSz)
         if (sz < 0 && errno == EINTR)
             continue;
 
-        if (sz < 0)
-            break;
-
-        if (sz == 0)
+        if (sz <= 0)
             break;
 
         readSz += sz;