Fix pedantic warnings in mingw builds.

Reviewed-by: Rich Salz <rsalz@openssl.org>

crypto/cryptlib.c

diff --git a/crypto/cryptlib.c b/crypto/cryptlib.c
index 39d1e1e..f0aaae6 100644
--- a/crypto/cryptlib.c
+++ b/crypto/cryptlib.c
@@ -117,10 +117,6 @@
 #include "internal/cryptlib.h"
 #include <openssl/safestack.h>
 
-#if defined(OPENSSL_SYS_WIN32)
-static double SSLeay_MSVC5_hack = 0.0; /* and for VC1.5 */
-#endif
-
 #if     defined(__i386)   || defined(__i386__)   || defined(_M_IX86) || \
         defined(__INTEL__) || \
         defined(__x86_64) || defined(__x86_64__) || \
@@ -268,15 +264,15 @@
     WCHAR *name;
     static union {
         void *p;
-        int (*f) (void);
+        FARPROC f;
     } _OPENSSL_isservice = {
         NULL
     };
 
     if (_OPENSSL_isservice.p == NULL) {
-        HANDLE h = GetModuleHandle(NULL);
-        if (h != NULL)
-            _OPENSSL_isservice.p = GetProcAddress(h, "_OPENSSL_isservice");
+        HANDLE mod = GetModuleHandle(NULL);
+        if (mod != NULL)
+            _OPENSSL_isservice.f = GetProcAddress(mod, "_OPENSSL_isservice");
         if (_OPENSSL_isservice.p == NULL)
             _OPENSSL_isservice.p = (void *)-1;
     }

crypto/dso/dso_win32.c

diff --git a/crypto/dso/dso_win32.c b/crypto/dso/dso_win32.c
index c6fec66..8d2123e 100644
--- a/crypto/dso/dso_win32.c
+++ b/crypto/dso/dso_win32.c
@@ -224,7 +224,10 @@
 static void *win32_bind_var(DSO *dso, const char *symname)
 {
     HINSTANCE *ptr;
-    void *sym;
+    union {
+        void *p;
+        FARPROC f;
+    } sym;
 
     if ((dso == NULL) || (symname == NULL)) {
         DSOerr(DSO_F_WIN32_BIND_VAR, ERR_R_PASSED_NULL_PARAMETER);
@@ -239,19 +242,22 @@
         DSOerr(DSO_F_WIN32_BIND_VAR, DSO_R_NULL_HANDLE);
         return (NULL);
     }
-    sym = GetProcAddress(*ptr, symname);
-    if (sym == NULL) {
+    sym.f = GetProcAddress(*ptr, symname);
+    if (sym.p == NULL) {
         DSOerr(DSO_F_WIN32_BIND_VAR, DSO_R_SYM_FAILURE);
         ERR_add_error_data(3, "symname(", symname, ")");
         return (NULL);
     }
-    return (sym);
+    return (sym.p);
 }
 
 static DSO_FUNC_TYPE win32_bind_func(DSO *dso, const char *symname)
 {
     HINSTANCE *ptr;
-    void *sym;
+    union {
+        void *p;
+        FARPROC f;
+    } sym;
 
     if ((dso == NULL) || (symname == NULL)) {
         DSOerr(DSO_F_WIN32_BIND_FUNC, ERR_R_PASSED_NULL_PARAMETER);
@@ -266,13 +272,13 @@
         DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_NULL_HANDLE);
         return (NULL);
     }
-    sym = GetProcAddress(*ptr, symname);
-    if (sym == NULL) {
+    sym.f = GetProcAddress(*ptr, symname);
+    if (sym.p == NULL) {
         DSOerr(DSO_F_WIN32_BIND_FUNC, DSO_R_SYM_FAILURE);
         ERR_add_error_data(3, "symname(", symname, ")");
         return (NULL);
     }
-    return ((DSO_FUNC_TYPE)sym);
+    return ((DSO_FUNC_TYPE)sym.f);
 }
 
 struct file_st {
@@ -704,7 +710,10 @@
     CREATETOOLHELP32SNAPSHOT create_snap;
     CLOSETOOLHELP32SNAPSHOT close_snap;
     MODULE32 module_first, module_next;
-    FARPROC ret = NULL;
+    union {
+        void *p;
+        FARPROC f;
+    } ret = { NULL };
 
     dll = LoadLibrary(TEXT(DLLNAME));
     if (dll == NULL) {
@@ -745,10 +754,10 @@
     }
 
     do {
-        if ((ret = GetProcAddress(me32.hModule, name))) {
+        if ((ret.f = GetProcAddress(me32.hModule, name))) {
             (*close_snap) (hModuleSnap);
             FreeLibrary(dll);
-            return ret;
+            return ret.p;
         }
     } while ((*module_next) (hModuleSnap, &me32));