File aimage-3.2.5-fix-bad-compilation-warnings.patch of Package aimage

Fix compilation warnings that are bad enough to trigger OBS failures:

- Possibly undefined operation in imager.cpp:
  random_page = ++(random_page) % num_pages

- int wipe(const char*) in aimage.cpp should return a value but does not.
  Return value is never used, so just change its prototype to 
  void wipe(const char*)

Index: aimage-3.2.5/src/aimage.cpp
===================================================================
--- aimage-3.2.5.orig/src/aimage.cpp
+++ aimage-3.2.5/src/aimage.cpp
@@ -839,7 +839,7 @@ int verify_file(const char *file1,const
     return 0;
 }
 
-int wipe(const char *file1)
+void wipe(const char *file1)
 {
     AFFILE *af1 = af_open(file1,O_RDWR,0777);
     unsigned char *zbuf = (unsigned char *)calloc(AFF_DEFAULT_PAGESIZE,1);
Index: aimage-3.2.5/src/imager.cpp
===================================================================
--- aimage-3.2.5.orig/src/imager.cpp
+++ aimage-3.2.5/src/imager.cpp
@@ -662,7 +662,7 @@ void imager::start_recover_scan()
 #endif
     while(missing_pages>0){
 	int random_page = random() % num_pages;
-	while(pages[random_page]!=0) random_page = (++random_page) % num_pages;
+	while(pages[random_page]!=0) random_page = (random_page + 1) % num_pages;
 	printf("*** try for page %d\n",random_page);
 	uint64 start_sector = random_page * sectors_per_page;
 	uint64 end_sector   = start_sector + sectors_per_page;