Fix stupid mis-initialization of current sample

.. nice compiler warning hidden by the crazy gcc pointer sign warnings
that nobody wants to see (yes, we really do want to do 'strlen()' even
on unsigned strings, don't complain, crazy bitch compiler).

So this also makes our CFLAGS set -Wno-pointer-sign.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Makefile

@@ -1,2 +1,5 @@
+CC=gcc
+CFLAGS=-Wall -Wno-pointer-sign -g
+
 parse: parse.c
-	gcc -Wall -g -o parse `xml2-config --cflags` parse.c `xml2-config --libs`
+	$(CC) $(CFLAGS) -o parse `xml2-config --cflags` parse.c `xml2-config --libs`

parse.c

@@ -185,7 +185,7 @@ static void sample_start(void)
 		if (!dive)
 			return;
 	}
-	sample = dive->samples + nr;
+	sample = dive->sample + nr;
 }
 
 static void sample_end(void)