fix PCREDIR

Signed-off-by: Alexander Ryzhov <openwrt@ryzhov-al.ru>

net/haproxy/Makefile

@@ -88,7 +88,7 @@ define Build/Compile
 		CFLAGS="$(TARGET_CFLAGS) -fno-align-jumps -fno-align-functions -fno-align-labels -fno-align-loops -pipe -fomit-frame-pointer -fhonour-copts" \
 		LD="$(TARGET_CC)" \
 		LDFLAGS="$(TARGET_LDFLAGS)" \
-		PCREDIR="$(STAGING_DIR)/usr/include" \
+		PCREDIR="$(STAGING_DIR)/usr" \
 		SMALL_OPTS="-DBUFSIZE=16384 -DMAXREWRITE=1030 -DSYSTEM_MAXCONN=165530 " \
 		USE_LINUX_TPROXY=1 USE_LINUX_SPLICE=1 USE_REGPARM=1 $(USE_OPENSSL) \
 		USE_ZLIB=yes USE_PCRE=1 \