Replace strcmp with byte-by-byte comparison in valkey-check-aof (#2809)

Fixes #2792

Replace strcmp with byte-by-byte comparison to avoid accidental
heap-buffer-overflow errors.

Signed-off-by: murad shahmammadli <[email protected]>
Co-authored-by: murad shahmammadli <[email protected]>

Author: MuradSh

src/valkey-check-aof.c

@@ -63,7 +63,7 @@ static long long line = 1;
 static time_t to_timestamp = 0;
 
 int consumeNewline(char *buf) {
-    if (strncmp(buf, "\r\n", 2) != 0) {
+    if (buf[0] != '\r' || buf[1] != '\n') {
         ERROR("Expected \\r\\n, got: %02x%02x", buf[0], buf[1]);
         return 0;
     }