Make mg_random() fallible. Abort TLS on weak RNG

tutorials/http/http-server/Makefile

@@ -3,7 +3,7 @@ DELETE = rm -rf                   # Command to remove files
 OUT ?= -o $(PROG)                 # Compiler argument for output file
 SOURCES = main.c mongoose.c       # Source code files
 CFLAGS = -W -Wall -Wextra -g -I.  # Build options
-CFLAGS += -fsanitize=address,undefined,alignment
+#CFLAGS += -fsanitize=address,undefined,alignment
 
 # Mongoose build options. See https://mongoose.ws/documentation/#build-options
 CFLAGS_MONGOOSE += -DMG_HTTP_DIRLIST_TIME_FMT="%Y/%m/%d %H:%M:%S"
@@ -13,7 +13,7 @@ CFLAGS_MONGOOSE += -DMG_TLS=MG_TLS_BUILTIN
 ifeq ($(OS),Windows_NT)   # Windows settings. Assume MinGW compiler. To use VC: make CC=cl CFLAGS=/MD OUT=/Feprog.exe
   PROG ?= example.exe           # Use .exe suffix for the binary
   CC = gcc                      # Use MinGW gcc compiler
-  CFLAGS += -lws2_32            # Link against Winsock library
+  CFLAGS += -lws2_32 -lbcrypt   # Link against Winsock library
   DELETE = cmd /C del /Q /F /S  # Command prompt command to delete files
   OUT ?= -o $(PROG)             # Build output
 endif
@@ -24,5 +24,8 @@ all: $(PROG)              # Default target. Build and run program
 $(PROG): $(SOURCES)       # Build program from sources
 	$(CC) $(SOURCES) $(CFLAGS) $(CFLAGS_MONGOOSE) $(CFLAGS_EXTRA) $(OUT)
 
+vc98:
+	cl $(SOURCES) -DMG_ENABLE_SSI=1 -DMG_TLS=MG_TLS_BUILTIN
+
 clean:                    # Cleanup. Delete built program and all build artifacts
 	$(DELETE) $(PROG) *.o *.obj *.exe *.dSYM