replace some leading tabs that had crept in

src/allmain.c

@@ -952,7 +952,7 @@ argcheck(int argc, char *argv[], enum earlyarg e_arg)
     for (idx = 0; idx < SIZE(earlyopts); idx++) {
         if (earlyopts[idx].e == e_arg){
             break;
-	}
+        }
     }
     if (idx >= SIZE(earlyopts) || argc < 1)
         return 0;

src/calendar.c

@@ -162,7 +162,7 @@ time_from_yyyymmddhhmmss(char *buf)
             timeresult = mktime(&t);
         }
         if (timeresult == (time_t) -1)
-	    ;
+            ;
 #if 0
 TODO: set_debugpline1, debugpline1 -> function pointer
             debugpline1("time_from_yyyymmddhhmmss(%s) would have returned -1",

src/do_wear.c

@@ -2496,7 +2496,7 @@ glibr(void)
         } else if (wastwoweap) {
             /* preceding msg was about non-dominant hand */
             which = URIGHTY ? "right " : "left ";
-	}
+        }
         pline("%s %s%s %s%s from your %s%s.",
               !strncmp(thiswep, "corpse", 6) ? "The" : "Your",
               otherwep ? "other " : "", thiswep, xfl ? "also " : "",

src/files.c

@@ -1923,7 +1923,7 @@ make_lockname(const char *filename UNUSED_conditional, char *lockname)
 /* lock a file */
 boolean
 lock_file(const char *filename, int whichprefix,
-	  int retryct UNUSED_conditional)
+          int retryct UNUSED_conditional)
 {
 #ifndef USE_FCNTL
     char locknambuf[BUFSZ];

src/makemon.c

@@ -43,8 +43,8 @@ is_home_elemental(struct permonst *ptr)
         case PM_WATER_ELEMENTAL:
             return Is_waterlevel(&u.uz);
         default:
-	    break;
-	}
+            break;
+    }
     return FALSE;
 }
 

src/nhlua.c

@@ -2000,7 +2000,7 @@ nhl_pcall_handle(lua_State *L, int nargs, int nresults, const char *name,
                        nud->name ? nud->name : "(unknown)",
                        lua_tostring(L, -1));
                 /* Drop the error.  If the caller cares, use nhl_pcall(). */
-	    lua_pop(L, 1);
+            lua_pop(L, 1);
         }
     }
     return rv;

src/options.c

@@ -8519,7 +8519,7 @@ doset_simple(void)
             adjust_menu_promptstyle(WIN_INVEN, &iflags.menu_headings);
         if (go.opt_update_basic_palette) {
 #ifdef CHANGE_COLOR
-	    change_palette();
+            change_palette();
 #endif
             go.opt_update_basic_palette = FALSE;
         }

src/report.c

@@ -405,7 +405,7 @@ printf("ShellExecute returned: %p\n",rv);   // >32 is ok
         if (pid == 0) {
             char err[100];
 #  ifdef CRASHREPORT_EXEC_NOSTDERR
-	    int devnull;
+            int devnull;
                 /* Keep the output clean - firefox spews useless errors on
                  * my system. */
             (void) close(2);
@@ -416,9 +416,9 @@ printf("ShellExecute returned: %p\n",rv);   // >32 is ok
             Sprintf(err, "Can't start " CRASHREPORT ": %s", strerror(errno));
             raw_print(err);
 #  ifdef CRASHREPORT_EXEC_NOSTDERR
-	    (void) close(devnull);
+            (void) close(devnull);
 #  endif
-	    exit(1);
+            exit(1);
         } else {
             int status;
             errno = 0;

src/uhitm.c

@@ -21,7 +21,7 @@ staticfn boolean hitum_cleave(struct monst *, struct attack *) NO_NNARGS;
 staticfn boolean double_punch(void);
 staticfn boolean hitum(struct monst *, struct attack *) NONNULLARG1;
 staticfn void hmon_hitmon_barehands(struct _hitmon_data *,
-		             struct monst *) NONNULLARG12;
+                             struct monst *) NONNULLARG12;
 staticfn void hmon_hitmon_weapon_ranged(struct _hitmon_data *, struct monst *,
                              struct obj *) NONNULLARG123;
 staticfn void hmon_hitmon_weapon_melee(struct _hitmon_data *, struct monst *,