This patch fixes the build when SPRO C compiler is used. The original source
code inconsistently mix "int" and "pid_t" data types.

compile error seen:

"process.c", line 185: identifier redeclared: start_system_process
"process.c", line 190: identifier redeclared: start_process
cc: acomp failed for process.c
make[2]: *** [foomatic_rip-process.o] Error 1
make[1]: *** [all] Error 2

--- a/foomaticrip.c	2012-03-14 20:45:28.000000000 +0100
+++ b/foomaticrip.c	2012-03-19 10:45:27.569249000 +0100
@@ -981,7 +981,8 @@
     int startpos;
     size_t n;
     FILE *fchandle = NULL;
-    int fcpid = 0, ret;
+    pid_t fcpid = 0;
+    int ret;
 
     if (!strcasecmp(filename, "<STDIN>"))
         file = stdin;
--- a/process.c	2012-03-14 20:45:28.000000000 +0100
+++ b/process.c	2012-03-19 10:36:39.639793000 +0100
@@ -45,7 +45,7 @@
     { "", -1, 0 }
 };
 
-void add_process(const char *name, int pid, int isgroup)
+void add_process(const char *name, pid_t pid, int isgroup)
 {
     int i;
     for (i = 0; i < MAX_CHILDS; i++) {
@@ -59,7 +59,7 @@
     rip_die(EXIT_PRNERR_NORETRY_BAD_SETTINGS, "Didn't think there would be that many child processes... Exiting.\n");
 }
 
-int find_process(int pid)
+int find_process(pid_t pid)
 {
     int i;
     for (i = 0; i < MAX_CHILDS; i++)
@@ -90,7 +90,7 @@
     clear_proc_list();
 }
 
-static int _start_process(const char *name,
+static pid_t _start_process(const char *name,
                           int (*proc_func)(FILE *, FILE *, void *),
                           void *user_arg, FILE **pipe_in, FILE **pipe_out,
                           int createprocessgroup)
@@ -182,17 +182,17 @@
     return EXIT_PRNERR_NORETRY_BAD_SETTINGS;
 }
 
-int start_system_process(const char *name, const char *command, FILE **fdin, FILE **fdout)
+pid_t start_system_process(const char *name, const char *command, FILE **fdin, FILE **fdout)
 {
     return _start_process(name, exec_command, (void*)command, fdin, fdout, 1);
 }
 
-int start_process(const char *name, int (*proc_func)(FILE *, FILE *, void *), void *user_arg, FILE **fdin, FILE **fdout)
+pid_t start_process(const char *name, int (*proc_func)(FILE *, FILE *, void *), void *user_arg, FILE **fdin, FILE **fdout)
 {
     return _start_process(name, proc_func, user_arg, fdin, fdout, 0);
 }
 
-int wait_for_process(int pid)
+int wait_for_process(pid_t pid)
 {
     int i;
     int status;
@@ -216,7 +216,7 @@
 
 int run_system_process(const char *name, const char *command)
 {
-    int pid = start_system_process(name, command, NULL, NULL);
+    pid_t pid = start_system_process(name, command, NULL, NULL);
     return wait_for_process(pid);
 }
 
--- a/process.h	2012-03-14 20:45:28.000000000 +0100
+++ b/process.h	2012-03-19 10:37:07.577847000 +0100
@@ -40,7 +40,7 @@
                           const char *alreadyread,
                           size_t alreadyread_len);
 
-int wait_for_process(int pid);
+int wait_for_process(pid_t pid);
 
 void kill_all_processes();