Address reported issues

Addressed:
* 'Expression: vector subscript out of range' (we only ever ensured capacity upon construction).
* Compiler error as AssertMsg1 is unimplemented, used Assert instead.

r5dev/common/igameserverdata.h

@@ -50,7 +50,7 @@ public:
 		m_bValidated = false;
 		m_bAuthorized = false;
 		m_bInputOnly = false;
-		m_RecvBuffer.reserve(sizeof(int)); // Reserve enough for length-prefix.
+		m_RecvBuffer.resize(sizeof(int)); // Reserve enough for length-prefix.
 	}
 };
 

r5dev/mathlib/sha256.cpp

@@ -127,7 +127,7 @@ string sha256(const string& input)
     char buf[2*SHA256::DIGEST_SIZE+1];
     memset(buf, '\0', 2*SHA256::DIGEST_SIZE+1);
 
-    for (int i = 0; i < SHA256::DIGEST_SIZE; i++) {
+    for (unsigned int i = 0; i < SHA256::DIGEST_SIZE; i++) {
         sprintf(buf + i * 2, "%02x", digest[i]);
     }
 

r5dev/tier1/cvar.cpp

@@ -959,7 +959,7 @@ CConCommandHash::CCommandHashHandle_t CConCommandHash::Find(const ConCommandBase
 #ifdef DBGFLAG_ASSERT // double check against search by name
 	CCommandHashHandle_t dbghand = Find(cmd->GetName());
 
-	AssertMsg1(InvalidHandle() == dbghand,
+	Assert(InvalidHandle() == dbghand,
 		"ConCommand %s couldn't be found by pointer, but was found by name!", cmd->GetName());
 #endif
 	return InvalidHandle();