Fix compiler warnings

* misleading indentation after spin loop
* EM_AVR32 might be defined in system <libelf.h> already


git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@1431 81a1dc3b-b13d-400b-aceb-764788c761c2

avr.c

@@ -80,7 +80,8 @@ int avr_tpi_chip_erase(PROGRAMMER * pgm, AVRPART * p)
 			0xFF
 		};
 
-    while (avr_tpi_poll_nvmbsy(pgm));
+    while (avr_tpi_poll_nvmbsy(pgm))
+        ;
 
     err = pgm->cmd_tpi(pgm, cmd, sizeof(cmd), NULL, 0);
     if(err)

fileio.c

@@ -34,8 +34,10 @@
 #elif defined(HAVE_LIBELF_LIBELF_H)
 #include <libelf/libelf.h>
 #endif
+#ifndef EM_AVR32
 #  define EM_AVR32 0x18ad         /* inofficial */
 #endif
+#endif
 
 #include "avrdude.h"
 #include "libavrdude.h"