Add include guards to setupintrarecon.h and vpx_once.h

Change-Id: Ife17fc6369ce32f36d5c7f8a2ef5a3b7724d81b9

vp8/common/setupintrarecon.h

@@ -8,6 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
+#ifndef SETUPINTRARECON_H
+#define SETUPINTRARECON_H
 
 #include "vpx_scale/yv12config.h"
 extern void vp8_setup_intra_recon(YV12_BUFFER_CONFIG *ybf);
@@ -31,3 +33,5 @@ void setup_intra_recon_left(unsigned char *y_buffer,
     for (i = 0; i < 8; i++)
         v_buffer[uv_stride *i] = (unsigned char) 129;
 }
+
+#endif

vpx_ports/vpx_once.h

@@ -7,6 +7,10 @@
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
+
+#ifndef VPX_ONCE_H
+#define VPX_ONCE_H
+
 #include "vpx_config.h"
 
 #if CONFIG_MULTITHREAD && defined(_WIN32)
@@ -95,3 +99,5 @@ static void once(void (*func)(void))
     }
 }
 #endif
+
+#endif