Make some changes for WASM build.

src/core/os.c

@@ -1567,6 +1567,18 @@ static const JanetReg os_cfuns[] = {
         JDOC("(os/shell str)\n\n"
              "Pass a command string str directly to the system shell.")
     },
+    {
+        "os/proc-wait", os_proc_wait,
+        JDOC("(os/proc-wait proc)\n\n"
+             "Block until the subprocess completes. Returns the subprocess return code.")
+    },
+    {
+        "os/proc-kill", os_proc_kill,
+        JDOC("(os/proc-kill proc &opt wait)\n\n"
+             "Kill a subprocess by sending SIGKILL to it on posix systems, or by closing the process "
+             "handle on windows. If wait is truthy, will wait for the process to finsih and "
+             "returns the exit code. Otherwise, returns proc.")
+    },
 #endif
     {
         "os/setenv", os_setenv,
@@ -1652,18 +1664,6 @@ static const JanetReg os_cfuns[] = {
         JDOC("(os/perm-int bytes)\n\n"
              "Parse a 9 character permission string and return an integer that can be used by chmod.")
     },
-    {
-        "os/proc-wait", os_proc_wait,
-        JDOC("(os/proc-wait proc)\n\n"
-             "Block until the subprocess completes. Returns the subprocess return code.")
-    },
-    {
-        "os/proc-kill", os_proc_kill,
-        JDOC("(os/proc-kill proc &opt wait)\n\n"
-             "Kill a subprocess by sending SIGKILL to it on posix systems, or by closing the process "
-             "handle on windows. If wait is truthy, will wait for the process to finsih and "
-             "returns the exit code. Otherwise, returns proc.")
-    },
 #endif
     {NULL, NULL, NULL}
 };

src/core/pp.c

@@ -454,7 +454,7 @@ static const char *janet_pretty_colors[] = {
     "\x1B[36m",
     "\x1B[36m",
     "\x1B[36m",
-    "\x1B[36m"
+    "\x1B[36m",
     "\x1B[35m",
     "\x1B[36m",
     "\x1B[36m",

src/core/util.c

@@ -680,6 +680,8 @@ int janet_cryptorand(uint8_t *out, size_t n) {
     arc4random_buf(out, n);
     return 0;
 #else
+    (void) n;
+    (void) out;
     return -1;
 #endif
 }