library: standardize 'pointer-to-thing' whitespace use

When declaring a pointer there's usually a space after
the thing-pointed-to and no space between the asterisk
and the pointer-thingy itself. So this commit enforces
such conventions where needed on old library elements.

Signed-off-by: Jim Warner <james.warner@comcast.net>

proc/wchan.h

@@ -1,6 +1,6 @@
 #ifndef PROCPS_PROC_WCHAN_H
 #define PROCPS_PROC_WCHAN_H
 
-extern const char * lookup_wchan (int pid);
+extern const char *lookup_wchan (int pid);
 
 #endif