fix auth read

Player/Display/x11.c

@@ -24,7 +24,7 @@
 bool quited = false;
 
 bool fileread(void *ctx, char *into, uint32_t bytes) {
-  return com_std_syscall(0, (intptr_t)ctx, (intptr_t)into, bytes);
+  return com_std_syscall(0, (intptr_t)ctx, (intptr_t)into, bytes) == bytes;
 }
 
 bool fileskip(void *ctx, uint32_t bytes) {
@@ -63,11 +63,11 @@ static struct plr_x11_auth_entry {
   if (!com_bin_read_u16(b, &data_len))
     goto BREAK;
   uint32_t data_idx;
-  if (!com_bin_read_bufbi(b, buf, &data_idx, name_len))
+  if (!com_bin_read_bufbi(b, buf, &data_idx, data_len))
     goto BREAK;
 
-  result.auth_name = com_buf_index(struct com_buf, buf, name_idx);
-  result.auth_data = com_buf_index(struct com_buf, buf, data_idx);
+  result.auth_name = com_buf_index_as(struct com_buf, buf, name_idx);
+  result.auth_data = com_buf_index_as(struct com_buf, buf, data_idx);
   result.success = true;
   return result;
 BREAK:

Player/Makefile

@@ -1,6 +1,7 @@
 CC = clang
-RELEASE ?= 0
-SQUEEZE ?= 0
+RELEASE ?= 0 # Optimize.
+DEBUG ?= 1   # Emit debug info.
+SQUEEZE ?= 0 # Nuclear option to save space.
 BITS ?= 64
 CFLAGS = -Wall -std=gnu99 -flto=thin -ffast-math -fno-ident -fvisibility=hidden
 ifeq ($(MAKECMDGOALS),linux)
@@ -23,10 +24,13 @@ ifeq ($(MAKECMDGOALS),wasm)
 	    CFLAGS += -Wl,--compress-relocations
 	endif
 endif
-ifeq ($(RELEASE), 0)
-    CFLAGS += -g3 -O1
+ifeq ($(DEBUG), 1)
+    CFLAGS += -g3
 else
-    CFLAGS += -Wl,--strip-all -DNDEBUG -O3 -fuse-ld=lld -fmerge-all-constants -Wl,-O3 \
+    CFLAGS += -DNDEBUG -Wl,--strip-all
+endif
+ifeq ($(RELEASE), 1)
+    CFLAGS += -O1 -fuse-ld=lld -fmerge-all-constants -Wl,-O3 \
     		  -ffunction-sections -fdata-sections -Wl,--gc-sections \
     		  -Wl,-mllvm,--vectorize-slp=true \
     		  -Wl,-mllvm,--enable-gvn-hoist=true