Cleanup Tile build for -Werror

Just the changes needed for the Tile architecture to compile cleanly with
-Werror.

src/runmode-tile.c

@@ -46,7 +46,7 @@
 
 #ifdef HAVE_MPIPE
 /* Number of configured parallel pipelines. */
-unsigned int tile_num_pipelines;
+int tile_num_pipelines;
 #endif
 
 /*

src/runmode-tile.h

@@ -32,7 +32,7 @@
 const char *RunModeTileMpipeGetDefaultMode(void);
 void RunModeTileMpipeRegister(void);
 
-extern unsigned int tile_num_pipelines;
+extern int tile_num_pipelines;
 
 int RunModeTileMpipeWorkers(DetectEngineCtx *);
 

src/threads-arch-tile.h

@@ -80,8 +80,8 @@
 /* Ignore signals when using spin locks */
 #define SCCondT uint8_t
 #define SCCondInit(x,y) ({ 0; })
-#define SCCondSignal(x)
-#define SCCondDestroy(x)
+#define SCCondSignal(x) ({ 0; })
+#define SCCondDestroy(x) ({ 0; })
 
 static inline void cycle_sleep(int cycles)
 {