[PATCH] Change dash2underscore() return value to char

[Alexey Dobriyan <adobriyan@gmail.com>]

From: Eric Sesterhenn <snakebyte@gmx.de>

Since dash2underscore() just operates and returns chars,
I guess its safe to change the return value to a char.
With my .config, this reduces its size by 5 bytes.

   text    data     bss     dec     hex filename
   4155     152       0    4307    10d3 params.o.orig
   4150     152       0    4302    10ce params.o

Signed-off-by: Eric Sesterhenn <snakebyte@gmx.de>
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>

--- a/kernel/params.c
+++ b/kernel/params.c
@@ -31,7 +31,7 @@
 #define DEBUGP(fmt, a...)
 #endif
 
-static inline int dash2underscore(char c)
+static inline char dash2underscore(char c)
 {
 	if (c == '-')
 		return '_';

-
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