dso/dso_win32.c: fix compiler warning.

crypto/dso/dso_win32.c

@@ -689,7 +689,6 @@ static int win32_pathbyaddr(void *addr,char *path,int sz)
 	CREATETOOLHELP32SNAPSHOT create_snap;
 	CLOSETOOLHELP32SNAPSHOT  close_snap;
 	MODULE32 module_first, module_next;
-	int len;
  
 	if (addr == NULL)
 		{
@@ -752,21 +751,25 @@ static int win32_pathbyaddr(void *addr,char *path,int sz)
 			return WideCharToMultiByte(CP_ACP,0,me32.szExePath,-1,
 							path,sz,NULL,NULL);
 # else
-			len = (int)wcslen(me32.szExePath);
+			{
+			int i,len = (int)wcslen(me32.szExePath);
 			if (sz <= 0) return len+1;
 			if (len >= sz) len=sz-1;
 			for(i=0;i<len;i++)
 				path[i] = (char)me32.szExePath[i];
 			path[len++] = 0;
 			return len;
+			}
 # endif
 #else
-			len = (int)strlen(me32.szExePath);
+			{
+			int len = (int)strlen(me32.szExePath);
 			if (sz <= 0) return len+1;
 			if (len >= sz) len=sz-1;
 			memcpy(path,me32.szExePath,len);
 			path[len++] = 0;
 			return len;
+			}
 #endif
 			} 
 		} while((*module_next)(hModuleSnap, &me32));